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Unique Birthday Party Themes for 20-Somethings

platter with three cupcakes. The cupcakes have stars sticking out of the white frosting

Birthdays are NOT just another day on the calendar; they are a reminder that you survived another crazy year of growth. Regardless of if the year was challenging, filled with once-in-a-lifetime memories, or somewhere in-between, you deserve to kiss the previous year goodbye with a celebration. And what better way to celebrate these milestones than by throwing an unforgettable birthday bash?

A birthday party theme is not just for grade school, in fact, with all the pressures of young adulthood, why not be nostalgic and bring out your inner kid. If you enjoy planning events or have friends that do, here’s some fun birthday party theme ideas that you can steal.

Let’s turn your upcoming birthday party into one that will be etched in the memory books for years to come. So, grab your party hats and get ready to plan. Let the festivities begin!

Love Island Birthday Party Theme

I am without a doubt obsessed with love island. I’m not sure if it’s the accents (it definitely is) or the fact that I can always count on a new episode waiting for me after a long day, but I would love to be transported into that world.

Planning a Love Island-themed party gives you a ton of flexibility because you can play more into the relaxation vibes and have a pool day, or you can plan activities to mimic the challenges the islanders play throughout their time in the villa.

I personally think my favorite part of this idea is setting up a “confessional booth” where your guests can record messages or do goofy things that you’ll all laugh about later.

I’m sure there are tons of party favor and decoration ideas on Pinterest, but some that come to mind are the iconic name water bottles and pool essentials like sunscreen, floaties, bucket hats, etc.

Barbie Birthday Party Theme

Nostalgia is taking over with this one. Barbie was one of the most common birthday party themes for girls when I was growing up and she probably still is today. In the cake books at the grocery store, she had multiple different pre-made designs to choose from because a Barbie theme was just THAT common.

Barbie is in her revival era for young adults and older, so why not embrace it and go all out with your perfect pink Barbie day.

Summer Camp Birthday Party Theme

For introverts like myself, this is a dream. Imagine going to a cabin with your best friends for the weekend and sitting by the fireplace trading life stories and drinking hot cocoa. A DREAM! Obviously, this theme can still be made into a big event, but there are lots of opportunities to make it more intimate and chill.

Almost like a weekend retreat, you could do “team-building” camp-like activities, go swimming or paddle boarding in the lake, read books, make smores – all of the above. This is a great way to truly just be in the presence of friends and bring in your new year calm and surrounded by love. Check out this TikTok to see what inspired me and what this looks like brought to life.

Music Festival Birthday Party Theme

If you’re the person who always holds the aux (or maybe you’re the person always enjoying someone else’s playlist) a music festival theme may be just the party for you. All of your friends dressed up in their best Coachella (or Stagecoach) fits dancing the night away. Sounds like a celebration to me.

PJ Party Birthday Party Theme

Who says we can’t have traditional sleepovers as adults? Okay okay, this is probably the most basic birthday party theme to exist, but it’s basic for a reason. Everyone has fun at a good slumber party. All I can envision is the gigantic slide scene for Princess Diaries and how much fun that seems. Gathering around a projector, watching your favorite movies or shows, eating your favorite snacks, and maybe even having a pillow fight.

Garden Party Birthday Party Theme

Garden parties are becoming increasingly popular for the spring and summer months and I can see why, they’re incredibly simple and cute. There’s something so wholesome about gathering outside with your friends around a table filled with flowers and a simple heart-shaped cake.

If you’re someone who doesn’t want to plan an entire event and would rather spend more time celebrating than planning, then this theme could be a strong contender for you.

Pink and blue garden birthday party theme. Table set up outside with flowers and candles and pink and blue napkins.

Game Night Birthday Party Theme

Activities galore! Whether it’s MarioKart or Monopoly, there are endless ways to keep the party going with a game night, especially if you have a supportive game-loving crew. This is definitely a theme for the game lover and action seeker. You won’t get much time to sit with your thoughts, but you’ll definitely have a lot of funny memories to share with your loved ones once it’s all said and done.

Birthday parties should not stop once you become an “adult”. So, let the celebrations begin with this collection of birthday themes that can cater to young adults of a variety of personalities and preferences.

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