50 Idioms for Costumes (Meanings and Examples)

Idioms are special phrases where the words together mean something different from what they say on their own. People use them to make their speaking and writing more colorful, fun, and creative. When we talk about dressing up, getting ready, or changing how we look, idioms help paint a clear picture in someone’s mind.

In this lesson, we’ll look at idioms that mean dressing up, wearing fancy clothes, or putting on a new look. Let’s get started and explore some of these helpful expressions.

Idioms for Costumes

1. Dress to the nines

Definition: To wear very fancy, stylish, or formal clothes for a special event.

Used in a Sentence: Sarah dressed to the nines for the annual school dance. / Everyone at the red carpet event was dressed to the nines.

Similar Expressions: Dressed to impress / Decked out

2. Put on a new face

Definition: To change your makeup, mask, or expression so people view you differently.

Used in a Sentence: The actor put on a new face before stepping out onto the stage. / She put on a new face to pretend she was not upset.

Similar Expressions: Change your look / Wear a mask

3. In full regalia

Definition: Wearing complete special clothes or a full costume with all the decorations.

Used in a Sentence: The marching band walked down the street in full regalia. / He showed up to the party in full regalia as a knight.

Similar Expressions: Dressed in full gear / Wearing total attire

4. Fit like a glove

Definition: To fit a person’s body perfectly without being too loose or tight.

Used in a Sentence: Her superhero outfit fit like a glove after the tailor fixed it. / The old mask surprisingly fit like a glove on his face.

Similar Expressions: Perfect fit / Tailor made

5. In disguise

Definition: Wearing clothes or accessories to hide who you really are.

Used in a Sentence: The detective walked through the crowd in disguise. / She visited the party in disguise as a famous queen.

Similar Expressions: Incognito / Under cover

6. Decked out

Definition: Decorated or dressed up in a very noticeable and complete way.

Used in a Sentence: The kids were decked out in spooktacular Halloween costumes. / He was decked out in colorful neon clothes for spirit day.

Similar Expressions: All dolled up / Gussied up

7. Wear your heart on your sleeve

Definition: Showing your feelings openly on your clothes or face for everyone to see.

Used in a Sentence: Mark wears his heart on his sleeve when he wears his happy pin. / She wore her feelings openly while wearing her sad clown suit.

Similar Expressions: Show your feelings / Open book

8. Sunday best

Definition: Your cleanest, newest, and most formal clothes reserved for special days.

Used in a Sentence: We always wear our Sunday best when going to family dinners. / He put on his Sunday best for the school pictures.

Similar Expressions: Fine clothes / Best outfit

9. Glad rags

Definition: Fancy clothes that you wear when going out to celebrate or party.

Used in a Sentence: Put on your glad rags because we are going out tonight. / She pulled her glad rags out of the closet for the dance.

Similar Expressions: Party clothes / Fancy attire

10. Suit up

Definition: To put on a specific uniform, suit, or costume for an activity.

Used in a Sentence: It is time to suit up for the big game. / The firemen had to suit up as soon as the alarm rang.

Similar Expressions: Gear up / Get dressed

11. Dress up

Definition: To wear special or fancy clothes, often to play a role or pretend.

Used in a Sentence: Children love to dress up as their favorite storybook characters. / We had to dress up for the fancy restaurant.

Similar Expressions: Play pretend / Wear fine clothes

12. Dressed to kill

Definition: Wearing clothes that are so stylish that everyone notices immediately.

Used in a Sentence: Maria entered the room dressed to kill in her shiny outfit. / He was dressed to kill for his first job interview.

Similar Expressions: Dressed to impress / Looking sharp

13. Birthday suit

Definition: Wearing no clothes at all, just like when you were born.

Used in a Sentence: The baby ran into the hallway in his birthday suit. / He jumped into the swimming pool in his birthday suit.

Similar Expressions: Wearing nothing / Completely bare

14. Wolf in sheep’s clothing

Definition: Someone who wears a nice disguise to hide that they are mean or bad.

Used in a Sentence: Do not trust him because he is a wolf in sheep’s clothing. / The villain entered the town as a wolf in sheep’s clothing.

Similar Expressions: Hidden enemy / Fake friend

15. All dolled up

Definition: Dressed in fine clothes with fancy hair or makeup put on carefully.

Used in a Sentence: She got all dolled up for her birthday photo shoot. / They were all dolled up to go see the play downtown.

Similar Expressions: Gussied up / Decked out

16. Mutton dressed as lamb

Definition: An older person wearing clothes that are meant for younger people.

Used in a Sentence: He felt like mutton dressed as lamb in those tiny teenage shorts. / She avoided neon trends so she would not look like mutton dressed as lamb.

Similar Expressions: Trying too young / Out of place style

17. In someone else’s shoes

Definition: Pretending to be or understand another person by taking their spot.

Used in a Sentence: Putting on that costume helped me walk in someone else’s shoes. / Imagine yourself in someone else’s shoes before you make fun of them.

Similar Expressions: In their place / Seeing their side

18. Wear many hats

Definition: To play many different roles or do many different jobs.

Used in a Sentence: At the theater, the director has to wear many hats. / She wears many hats by being a nurse, mom, and coach.

Similar Expressions: Do multiple roles / Take on extra duties

19. Under the veil

Definition: Hidden behind a cloth, disguise, or secret cover.

Used in a Sentence: She kept her identity secret under the veil of a mysterious persona. / The magician kept his trick hidden under the veil of darkness.

Similar Expressions: Behind a screen / Covered up

20. Off the peg

Definition: Ready-made clothes bought from a standard store shelf rather than custom made.

Used in a Sentence: He bought his pirate coat off the peg at the party store. / Her dress was off the peg but looked very high class.

Similar Expressions: Off the rack / Ready to wear

21. Look a million bucks

Definition: Looking extremely good, healthy, stylish, and attractive in your outfit.

Used in a Sentence: You look a million bucks in that dark tuxedo. / She felt like she looked a million bucks on graduation day.

Similar Expressions: Look fantastic / Looking grand

22. In threads

Definition: Wearing clothes or garments, usually referring to specific styles.

Used in a Sentence: He showed up to the party wearing some cool new threads. / She looked great in her retro vintage threads.

Similar Expressions: In garments / Wearing duds

23. Behind the mask

Definition: The real thoughts or identity hidden underneath someone’s disguise or fake exterior.

Used in a Sentence: Behind the mask, the actor was actually very shy. / No one knew what he truly felt behind the mask.

Similar Expressions: Secretly / Underneath it all

24. Smartly dressed

Definition: Wearing neat, clean, and well-fitting neat clothes.

Used in a Sentence: All the students were smartly dressed for the concert. / He looked smartly dressed in his school blazer.

Similar Expressions: Looking sharp / Well groomed

25. Cast off

Definition: Old clothes or costumes that are given away because they are no longer needed.

Used in a Sentence: She made her costume out of cast off fabric from her grandmother. / The box contained cast off shirts for dress-up play.

Similar Expressions: Hand-me-downs / Discarded clothes

26. Keep it under your hat

Definition: Keep your secret or real identity hidden under cover.

Used in a Sentence: Keep your costume idea under your hat until the big reveal. / He kept his true identity under his hat all night.

Similar Expressions: Keep secret / Keep quiet

27. Put on your thinking cap

Definition: Wearing an imaginary cap to focus on solving a problem or making something.

Used in a Sentence: We need to put on our thinking caps to build this outfit. / Put on your thinking cap to win the costume contest.

Similar Expressions: Focus your mind / Think hard

28. Dressed to the teeth

Definition: Completely dressed up from head to toe with every item included.

Used in a Sentence: The knight was dressed to the teeth in shiny steel armor. / She was dressed to the teeth with matching shoes and purse.

Similar Expressions: Fully outfitted / Fully equipped

29. Change your stripes

Definition: Changing your outward look, personality, or appearance.

Used in a Sentence: The actor changed his stripes by putting on a dark cloak. / It is hard to change your stripes after playing the bad guy for so long.

Similar Expressions: Change your identity / Switch your style

30. Gussied up

Definition: Dressed in extra fancy or decorative clothes for a special event.

Used in a Sentence: We got all gussied up to attend the wedding reception. / The dog was gussied up in a tiny red bow tie.

Similar Expressions: All dolled up / Decked out

31. Cut from the same cloth

Definition: Looking or acting very similar, as if made from one piece of fabric.

Used in a Sentence: The twins looked cut from the same cloth in their identical shirts. / Those two villains are cut from the same cloth.

Similar Expressions: Very similar / Just alike

32. In your true colors

Definition: Showing what you really look like or who you really are without a disguise.

Used in a Sentence: He finally showed his true colors when he removed his mask. / Her true colors shone through her honest performance.

Similar Expressions: Real self / Unmasked

33. Wrap yourself in

Definition: Covering your body completely with a specific material, style, or outfit.

Used in a Sentence: She chose to wrap herself in a long black velvet cape. / He wrapped himself in bandages to play a mummy.

Similar Expressions: Cover up / Bundle up

34. Stripped down

Definition: Taking off extra gear or costumes to leave only the basic layer.

Used in a Sentence: The dancer stripped down to her simple black leotard. / He stripped down his heavy armor after the performance was over.

Similar Expressions: Simplified / Bare minimum

35. Make a fashion statement

Definition: Wearing an outfit that draws attention and expresses an bold idea.

Used in a Sentence: Her giant bird costume definitely made a fashion statement. / He made a fashion statement with his bright green shoes.

Similar Expressions: Stand out / Express yourself

36. Feather in your cap

Definition: An extra badge, accessory, or accomplishment that adds to your outfit’s success.

Used in a Sentence: Winning the best costume award was a great feather in his cap. / Designing her own outfit was another feather in her cap.

Similar Expressions: Proud achievement / Extra credit

37. On the catwalk

Definition: Modeling a costume or outfit by walking down a stage for people to see.

Used in a Sentence: The students showed off their handmade designs on the catwalk. / She strutted on the catwalk like a professional model.

Similar Expressions: On stage / On parade

38. Off the wall

Definition: An outfit or costume idea that is very unusual, shocking, or strange.

Used in a Sentence: His alien costume idea was completely off the wall. / She likes wearing off the wall clothes that no one else has.

Similar Expressions: Unusual / Strange

39. In the spotlight

Definition: Standing where everyone can see your costume and look closely at you.

Used in a Sentence: The lead singer stepped into the spotlight wearing her shiny dress. / He loved being in the spotlight in his superhero cape.

Similar Expressions: Center of attention / On display

40. Look the part

Definition: Wearing the right clothes so that you appear correct for a specific role.

Used in a Sentence: With that fake beard, he really looks the part of Santa. / You need to look the part if you want to play a doctor.

Similar Expressions: Fit the image / Look right

41. Wear the pants

Definition: Wearing the main clothing item that shows who is in control of a situation.

Used in a Sentence: In that dramatic stage play, the queen wears the pants. / He wore the pants by making all the design choices.

Similar Expressions: Take control / Be in charge

42. Tighten your belt

Definition: Adjusting your clothing to fit smaller or spend less money on outfit materials.

Used in a Sentence: We had to tighten our belt and make a budget costume. / He tightened his belt so his pants would not fall down.

Similar Expressions: Save money / Pull in tight

43. Clean up well

Definition: Looking surprisingly neat and handsome after dressing up in good clothes.

Used in a Sentence: He usually wears old jeans, but he cleans up well in a suit. / She cleans up well when it is time for formal pictures.

Similar Expressions: Look sharp / Scrub up well

44. Pass for someone

Definition: Looking so much like a person in your costume that people believe you are them.

Used in a Sentence: With that wig on, she could pass for a movie star. / He tried to pass for a security guard at the show.

Similar Expressions: Pretend to be / Look like

45. In full bloom

Definition: Looking completely finished, beautiful, and fully decorated in your attire.

Used in a Sentence: Her floral flower gown looked like it was in full bloom. / The theater company’s design was in full bloom on opening night.

Similar Expressions: Fully styled / Radiant

46. Under a false name

Definition: Wearing a disguise while using a different name to hide yourself.

Used in a Sentence: The prince traveled under a false name while dressed as a farmer. / She entered the costume contest under a false name.

Similar Expressions: Using an alias / Incognito

47. Fresh pair of eyes

Definition: Looking at an outfit from a new angle or having someone else check it.

Used in a Sentence: We need a fresh pair of eyes to see if this cape looks right. / A fresh pair of eyes helped spot the loose button on my suit.

Similar Expressions: New look / Different view

48. Dress for success

Definition: Wearing professional or appropriate clothes to help you perform well.

Used in a Sentence: My teacher told us to dress for success on presentation day. / He dressed for success by wearing a clean tie to the meeting.

Similar Expressions: Dress smart / Look ready

49. Cloaked in mystery

Definition: Covered by a dark coat or disguise that makes you hard to understand.

Used in a Sentence: The strange character entered the stage cloaked in mystery. / Her disguise left her intentions cloaked in mystery.

Similar Expressions: Hidden away / Mysterious

50. Throw on

Definition: Putting on clothing quickly without thinking or worrying about how it looks.

Used in a Sentence: I need to throw on a jacket before we leave the house. / He threw on a simple cape and called it a costume.

Similar Expressions: Slip into / Put on fast

Exercise to Practice

1. If someone is dressed to the nines, they are wearing their oldest, dirtiest work clothes.
2. An outfit that fits like a glove is extremely loose and falls off your body easily.
3. Walking around in disguise means you are hiding who you are by wearing special clothes or a mask.
4. Your Sunday best refers to your newest, cleanest, and finest clothes.
5. Wearing a birthday suit means you are dressed in a giant party dress with balloons.
6. A wolf in sheep’s clothing is a nice person who is dressed up as a scary animal.
7. Getting all dolled up means putting effort into dressing nicely and doing your hair or makeup.
8. If you keep something under your hat, you are sharing the news with everyone in school.
9. Being cut from the same cloth means that two things or people look or act very similar.
10. Showing your true colors means wearing a rainbow costume to a party.
11. If you look the part, you are dressed appropriately for the role you are playing.
12. Buying clothes off the peg means having a tailor build them specifically for your body.
13. Cleaning up well means looking very neat and handsome after putting on nice clothes.
14. Being cloaked in mystery means everyone easily knows every single detail about you.
15. Throwing on an item of clothing means putting it on very quickly.

Answer Key

1. False
2. False
3. True
4. True
5. False
6. False
7. True
8. False
9. True
10. False
11. True
12. False
13. True
14. False
15. True

Conclusion

Learning these idioms for costumes gives you a great way to talk about clothes, disguises, and styles. They help you explain how someone looks without just using basic words.

Try using a few of these expressions next time you dress up or see a cool outfit. Sharing these fun sayings will make your English sound more natural and colorful!

Frequently Asked Questions

What are some common idioms for costumes?

Common idioms include phrases like “decked out,” “dressed to the nines,” and “in disguise.” These sayings describe how someone is dressed or how their clothes alter their appearance.

Why do we use costume idioms in English?

We use these idioms to make descriptions of clothing and disguises more vivid and interesting. They allow us to share feelings about an outfit using fun visual language.

Can costume idioms be used for everyday clothing?

Yes, many of these idioms can describe everyday outfits as well as special outfits. For example, you can say someone is “dressed to impress” even if they are just wearing a nice shirt to school.

What does it mean to be dressed to the nines?

To be dressed to the nines means to wear very formal, fancy, or fashionable clothing. People often use this idiom when someone gets ready for a dance, wedding, or big party.

Are costume idioms used in books and movies?

Yes, authors and filmmakers frequently use costume idioms in dialogue and story lines. They help explain a character’s role, disguise, or hidden identity in a quick way.