Whooooooa…Millie Bobby BrownIs officially considered an adult.

The British actress, who rose to fame as a child star playing Eleven on the hit Netflix series Stranger Things, turned 18 on Saturday, Feb. 19. Millie was there to celebrate the occasion with her boyfriend Jake Bongiovi, Jon Bon Jovi‘s 19-year-old son.

Both posted an Instagram selfie of themselves showcasing coordinated styles inspired by Barbie. Jake sported bleached blonde hair—lightened from his dirty blonde locks—and the brunette actress wore a long wig of the same light color. Millie was dressed in a corset-style, floral Annie’s Ibiza gown while Jake wore a white and brown floral collared shirt.

“Happy birthday barbie ily <3,” Jake captioned his post.

Millie said, “Endless Love.”

She captioned her identical post, “Hey ken!”

Jake shared the following comment: “Ur, rly pret.”

This is the actress Stranger Things co-star Noah SchnappWrites “Birthday girl” with two clapping emoticons. Another cast member Matthew Modine wrote, “Say what!?” Paris Hilton commented, “Loves it.”

Mille and Jake began dating early last year and were photographed together in public for the first time last June, walking and holding hands in New York City.