Olivia Rodrigo had her cake … and wore it, too.

The pop star celebrated her birthday over the weekend in typically fabulous style, choosing an all-pink ensemble by No Dress to ring in the last year of her teens.

She sported the brand’s birthday cake-themed Rosy Print Skirt ($146) and matching Oversleeve and Camisole Set ($146) for a night out with friends at Shorebar Santa Monica.

The singer donned a sparkly “Birthday Girl” cowboy hat (an $8 Party City find!) for the festivities, and BFF Iris Apatow joined in on the fun in a matching style of her own.

The “Good 4 U” singer further accessorized with towering Naked Wolfe platform heels ($350) and a colorful, chunky MBK Jewelry ring ($132).

Rodrigo’s skirt declared, “Eat me please I’m so delicious” — so it’s no surprise that the star and her friends tucked into a chocolate cake for the occasion.

The dessert was even decorated with lyrics from fellow musician Lorde: “I’m 19 and I’m on fire.”

Apatow’s new boyfriend (and Kate Hudson’s son) Ryder Robinson joined the birthday crew, along with The Kid Laroi.

Earlier last week, Rodrigo headed to Disneyland for an early birthday celebration, sharing snaps on Instagram wearing a Mimi Wade “Adult Fairytales” T-shirt ($126), Edikted cargo pants and a (sold-out) Beepy Bella trucker hat that read, “I love fantasy.”

Cheers to all of the birthday girl’s fantasies coming true!