Olivia Rodrigo Celebrates 21st Birthday with 'Spill Ur Guts' Cake: 'Excited for All the Good Times Ahead'

Olivia Rodrigo went all out to celebrate turning 21!

On Tuesday, the "Vampire" singer marked the milestone birthday by taking to Instagram to share multiple celebratory snaps — including one showing her posing next to a "spill ur guts" cake.

Rodrigo has been busy rehearsing for her upcoming Guts World Tour, which kicks off on Friday in Palm Springs, California at Acrisure Arena. Her album of the same name was released in September 2023.

Rodrigo's birthday cake featured a heart-shaped middle layer, as well as a top layer that had her album name written on it with black and red icing. It was made by Duff Goldman's bakery Charm City Cakes, which posted a full-length photo of the incredible creation.

Another photo showed Rodrigo sitting among balloons while eating cake, while a video captured the moment she jumped up and down when she was presented with her special cake.

The musician also posted a throwback snap of herself as a child wearing a handmade birthday hat.

"21!!! so grateful for all of the incredible things I’ve been able to experience so far and so excited for all the good times ahead💓💓💓 thx 4 all the love💋," Rodrigo wrote in the caption.

It's been a week of celebrations for Rodrigo, who partied with friends including Tate McRae, Iris Apatow, Conan Gray and The Kid LAROI over the weekend.

On Monday, a day before her milestone birthday, the singer shared some snaps from her party on Instagram. "Today is my last day of being able to underage drink (hypothetically) !!!!" the "Good 4 U" hitmaker captioned the post.

In the carousel of photos, Rodrigo posed with friends, showed off her SusieCakes treats and was pictured blowing out candles.

Ahead of her big day, Rodrigo — who previously starred in Disney's High School Musical: The Musical: The Series and Bizaardvark — spoke about potentially returning to acting and doing a "coming-of-age" movie ahead of her 21st birthday.

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"I love movies, I love telling stories," she told Variety last month. "I really want to do a coming-of-age thing, maybe before I'm actually of age."

"Maybe I am of age already," Rodrigo added. "I just love telling stories, whether that be in a song or movie, that’s just something that really excites me."