26 Most Popular Girl Birthday Party Themes for 2021!

by Jillian Leslie on

What are the 26 most popular girl birthday party themes for 2021? Check out the list, to find out. And notice the new entrants, like TikTok parties and spa parties!

As we all itch to throw parties again, we hope these ideas get you inspired and planning. These party themes are all on trend!

These Are the Most Popular Girl Birthday Party Themes for 2021!

Many of these birthday party themes for girls are long-time favorites while others are new and trendy.


These Are the Most Popular Girl Birthday Party Themes for 2021

1. TikTok Parties

TikTok is a massive hit. Everyone has is on their phone and girls seem to spend hours scrolling through the latest memes, and trying out the newest TikTok dances!

TikTok parties have blown up on Catch My Party. They are everywhere, so you can be sure they will be the trend of 2021!

Take a look at these wonderful TikTok birthday party supplies and download our free TikTok party printables.

TikTok birthday party

2. Mermaid Parties

Mermaid parties continue to be a popular girl party theme that girls can't seem to get enough of.

They are a wonderful summer theme, especially if you're having a pool party.

You can never use too many mermaid tails and shells!

Don't miss these fantastic mermaid birthday party supplies and our free mermaid party printables to decorate your party!

Mermaid birthday party

3. Unicorn Parties

Unicorn party themes are going nowhere!

They continue to be one of the most popular party themes out there and are a magical trend that girls love.

Don't miss these unicorn birthday party supplies.

And decorate your party on a budget with our free unicorn party printables.

Unicorn birthday party

4. Minnie Mouse Parties

Everyone, at some stage in their life, falls in love with Minnie Mouse, making her another of the most popular girl party themes that you can bet will be around in 2021!

Minnie Mouse parties are especially popular for 1st birthdays.

Take a look at these wonderful Minnie Mouse birthday party supplies.

And we also offer free Minnie Mouse party printables to decorate your party!

Minnie Mouse birthday party

5. Princess Parties

2021 is sure to be another year where girls' dreams will come true and they'll be princesses, even if only for a day.

With so many princesses to choose from, such as Elsa, Moana, and even classical ones such as Cinderella and Snow White, there are so many possible princess party themes to be had.

You'll have a hard time picking out a favorite!

Take a look at these wonderful princess birthday party supplies.

And if you want free printable party printables to decorate your party, we've got those too!

Princess birthday party

6. Garden Parties

A garden party is such a whimsical party theme. Although initially when we think garden party, we think of an outdoor setting, don't let that stop you from bringing the outdoors inside with some amazing floral decorations!

It's a beautiful theme to take outdoors when the weather is gorgeous.

Use flowers, birds, and butterflies as a party decoration and you can't go wrong!

Take a look at these whimsical garden birthday party supplies.

Garden birthday party

7. Barbie Parties

If your daughter is a stylish fashionista and loves Barbie dolls, then a Barbie-themed party will fit her like a glove.

Decorate with as much pink and black as you can to create the ultimate Barbie look!

Don't miss these stylish Barbie birthday party supplies.

And if you are looking for some free vintage Barbie party printables to decorate your party on a budget, we've got those!Barbie birthday party

8. Donut Parties

There's not anyone that doesn't love a tasty donut... or two, which is why a donut themed party is a great choice for those that just can't get enough of them.

The theme is so popular at the moment with girls.

Go with a colorful pastel color scheme to make your party absolutely delicious!

Don't miss these wonderful donut birthday party supplies.

And if you're looking for free donut party printables to decorate your party on a budget, we've got those too!

Donuts birthday party

9. Ice Cream Parties

Another fabulous party theme for those with a sweet tooth is undoubtedly an ice cream party.

It's a great theme for a summer party where everyone wants to cool off in the heat.

It's also a great excuse to create an ice cream bar and go wild with all the toppings!

Take a look at these cool ice cream birthday party supplies.

Ice Cream birthday party

10. Trolls Parties

A Trolls birthday party is a magical theme for fans of the movie.

The movie was such a hit that since it came out, we've seen so many Trolls birthday parties on Catch My Party.

It's a great excuse to use loads of color and give out a bunch of hugs! I think we could all do with one.

Check out these fun Trolls birthday party supplies.

Trolls birthday party

11. Tea Parties

Tea parties are so elegant and such an amazing party theme for those that long for an afternoon of high tea.

Treat your guest to an assortment of fine teas, pretty sandwiches, scones, and pastries.

Take a look at these stunning tea party birthday party supplies.

Tea Party birthday party

12. Llama Parties

Another hot party theme for 2021 is undoubtedly a llama party.

Like flamingo and unicorn parties, llama birthday parties are a massive hit with girls and are a great excuse to add some color and fiesta to a birthday!

Take a look at these wonderful llama birthday party supplies.

Llama birthday party

13. Spa Parties

There's nothing that compares to an afternoon of pampering with your girlfriends.

Treat your guests to the ultimate spa treatment. The girls are going to love the special treatment and leave so relaxed.

Don't miss these fantastic spa birthday party supplies.

If you'd like some fun free spa party printables, download them here!

Spa birthday party

14. LOL Surprise Dolls Parties

LOL Suprise Dolls is such a popular party theme that brings together two things girls love... surprises and dolls.

We saw an increase in popularity of LOL Suprise Dolls parties over the past couple of years, and 2021 looks set to be another big one for them.

Check out these amazing LOL Suprise Dolls birthday party supplies.

15. Woodland Parties

Children love cute little animals like foxes and deer, which is one of the reasons why woodland parties are so loved by girls.

The theme is so feminine and is a great excuse to add adorable animals and lots of flowers.

Don't miss these lovely woodland birthday party supplies 

16. Flamingo Parties

Flamingo parties, similar to unicorn and llama parties, are one of those party themes that is going nowhere in 2021!

Add some tropical flair to a birthday with lots of tropical flowers, pineapples, and as many flamingos as you can get your hands on.

Take a look at these fabulous flamingo birthday party supplies.

Flamingo birthday party

17. Moana Parties

Another movie that is now an incredibly popular party theme is Moana.

Her story is such an inspiration for girls, which is why Moana parties such a sought-after party theme.

Take your guests to a distant tropical island without ever leaving your town.

Don't miss these beautiful Moana birthday party supplies.

And if you'd like some free Moana party printables to decorate your party, we've got those too!

Moana birthday party

18. Safari Parties

Safari parties are everywhere right now. It has to be one of our most popular party themes on Catch My Party, especially with boys!

So if your daughter is wild about safari or jungle animals you really can't go wrong with this party theme.

Take a look at these stunning safari birthday party supplies.

And if you're looking for budget decorations, download our free safari party printables.


Safari birthday party

19. Dinosaur Parties

Another theme that has become a massive trend during 2020 are dinosaur parties.

Boys can't seem to get enough of them and girls are now also catching on.

So if you have a girl that is crazy about T-Rex's and Velociraptor's look no further. This theme is the perfect choice for her!

Take a look at these fun dinosaur birthday party supplies.

Dinosaur birthday party

20. Frozen Parties

Frozen parties have always been a massive trend and girls really can't seem to let them go.

Anna and Elsa continue to enchant girls with their love for each other and their amazing songs.

A Frozen themed party is guaranteed to warm everyone's heart

Take a look at these magical Frozen birthday party supplies.

And if you'd like fun free Frozen party printables to decorate your party, we have them!

Frozen birthday party

21. Carousel Parties

If you'd rather go with a more vintage theme then a carousel party is a perfect choice.

Who can resist a gorgeous carousel and the stunning horses?

You can bet you'll have a memorable party to look back on.

Take a look at these wonderful carousel birthday party supplies.

22. Boho Parties

Another very popular feminine party theme for 2021 is a boho party.

If you're looking for a theme that is more in touch with nature and more eclectic, then look no further!

Boho parties are a wonderful choice for those who love a whimsical party with a feminine touch.

You can never have enough flowers, teepees, and dreamcatchers, right?

Take a look at these wonderful boho birthday party supplies.

Boho Chic birthday party

23. Under The Sea Parties

As with mermaids, kids can't get enough of under the sea themed parties.

So let your guests dive into a magical underwater extravaganza and treat them to a fun time!

Take a look at these delightful under the sea birthday party supplies.

Under The Sea birthday party

24. Rainbow Parties

These past couple of months we've seen an increase in rainbow parties.

They are starting to pop up all over the place and I would bet that 2021 is going to be the year of the rainbow party!

You can either go with a colorful party jam-packed with every color under the sun, or for something more muted but equally as beautiful with a boho themed rainbow party.

Whatever you go for you'll be right on trend!

Take a look at these wonderful rainbow birthday party supplies.

Rainbow birthday party

25. Parisian Parties

Parisian parties are a wonderful theme for those that love to travel and everything chic!

It's such a stylish theme that is so elegant and feminine.

Serve your guests macrons and croissants and before you know it they'll be speaking French!

Don't miss these sophisticated Parisian birthday party supplies.

Parisian birthday party

26. Alice in Wonderland Parties

To finish off our list of popular party themes for 2021 we just had to add the classical Alice in Wonderland birthday that transports girls to a magical world of tea parties and mad hatters.

It's a great theme if you want to add a shabby chic look to your party, and if 2020 is anything to go by, expect 2021 to be another great year for Alice in Wonderland.

Don't miss these beautiful Alice in Wonderland birthday party supplies.

For more inspiration, check out all our amazing birthday parties for girls, and check out these girl birthday party supplies from vendors with listings on Catch My Party!

If on the other hand you are planning a girl 1st birthday or a girl baby shower, be sure to also check out our posts for wonderful ideas.

Need more girl birthday party ideas and inspirations?

Need girl birthday craft ideas?

Need free birthday party printable decorations?

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