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Simply Life By Bri

21st birthday party themes
Gift Guides, Lifestyle
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April 15, 2023

25 Absolute Best 21st Birthday Party Themes Your Guests Will Love

If you are struggling to come up with a theme for your party, I’ve got you! All of these 21st birthday party themes are super cute ideas that everyone will LOVE!

21st birthday party themes

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Planning a party can be so annoying sometimes when you can’t figure out what food you want to have, what decorations to use, and every other little detail. Having a theme makes it so much easier to organize and plan everything.

I’ve got all the best 21st birthday party themes that everyone will love. Trust me, you are sure to find something on this list that will make for your perfect 21st birthday party.

This post is all about 21st birthday party themes!

white lie party

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A white lie party is such a funny idea for a 21st birthday party theme. Everyone gets to make a cute shirt with their favorite white lie!

This makes for some really funny conversations and super cute pictures. And if you need ideas for your shirt, check out this article: 45 Hilarious White Lie Party Ideas To Have the Best Outfit at the Party!

dress as your favorite liquor

This one is very fitting for a 21st birthday. Have every party guest wear an outfit corresponding to their favorite drink.

If you want to take it a step further, they can even bring the drink too.

western party

A western theme is always a cute and easy option for a 21st birthday party theme. Most people have something western in their closet already, whether it’s some cowboy boots, a flannel, or a bandana.

all white party

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One of the easiest themes you can do is an all white party. Any party store or amazon will have all the essential decorations you will need.

As far as clothes, everyone has something white that they can wear!

roaring 20s

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A roaring 20s theme is such a cute and classy 21st birthday party theme. You can go all out with the black and gold decorations for this one.

Plus, everyone’s outfits will be so cute with this theme. You will definitely get tons of really good pictures.

80s theme

If you wanna do a decade but the 20s aren’t your favorite, have an 80s-themed party instead. All these neon outfits are going to be so cute.

bottomless brunch

You can’t get cuter than a bottomless brunch for your 21st birthday party. You can either go to a cute brunch place or have fun making everything at home.

fiesta theme

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This is such a cute theme for your 21st birthday! For this one, you can get all fiesta-themed decorations and then make all your favorite Mexican food.

poker night

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If you are a poker fan, that’s the perfect theme for your party. You can get super creative with all the decorations with this theme.

disco theme

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You can never go wrong with disco theme! Sparkles and bright colors make for all the cutest decorations and outfits.

Coachella theme

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A Coachella theme is a super unique 21st-birthday theme that is so damn cute! You can get super creative with all the decorations and everyone can wear their best outfits.

“Why is this in my closet” theme

This is such a fun party theme. For this, everyone wears that one thing in their closet that they never wear.

With this theme, everyone shows up in something a little different and it’s so funny seeing everyone’s outfits.

wine and charcuterie theme

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A good charcuterie board is perfect for any party. Now that you’re 21, have a wine night with all your friends for your birthday!

boho theme

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shop amazon now!
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For a classier look, go with a boho theme for all the decorations. People can even dress accordingly in beiges and neutral colors.

This one looks super impressive and makes for some great pictures with all your friends.

neon/glow party

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shop amazon now!

A super fun 21st birthday party theme is a neon glow party! The decorations for this one are so cute, plus everyone will glow in the lights if they are wearing white.

masquerade party

For a little bit of a fancier party, have a masquerade theme. Then, everyone can show up in their fanciest mask and take super cute pictures.

tea party

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You can never go wrong with a cute tea party for your 21st birthday! It is so much fun to make all the little desserts and then have them all with your friends.

blackout theme

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Like the all-white theme, you can also have a blackout theme where everyone wears black. This will be super easy for all your guests because everyone has something black in their closet.

drunk Olympics

If you are looking for some activities to go with your party theme, a drunk Olympics theme is perfect! This is so much fun at your party and everyone will be laughing so much.

picnic theme

Take all your friends on a picnic for your 21st. You can make all the food and bring it, or have everyone bring something and do it potluck style.

party bus

Rent a party bus for your 21st birthday and take all your friends around the city!

vegas theme

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A Vegas theme is such a fitting theme for a 21st birthday party. You can really go crazy with all the decorations for this one!

pajama party/movie night

Any party that you have to wear pajamas to is a good party. This is such a cute and fun idea that everyone is going to love!

You can pick your favorite movie and everyone can have their favorite candy and snacks.

Taylor swift theme

For all the Swifties out there, make your 21st birthday a Taylor Swift-themed party. You can do so much with the decorations for this one.

Plus, for clothes, everyone can dress up in their favorite era.

red flag theme

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This one is always a super funny party. Everyone dresses in a red t-shirt with their biggest red flag written on it in Sharpie.

This post was all about 21st birthday party themes!


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  • 27 Gifts For Athletes That They Actually Want
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Bri

Hey there! My name is Bri and I am a college lifestyle blogger! I love organization, productivity, cooking, baking, reading, and photography. Throughout my blog, you will find a little bit of all these passions! My goal is to help high schoolers, college students, and young adults, whether it be by creating a functioning living space or learning how to cook healthy meals.

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hey there, I’m Bri

hey there, I’m Bri

I'm so happy you're here!

I'm your not-so-average college freshman. This blog is a look into my head at all things dorm decor & organization, productivity, and school tips to help you simplify your life!

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