Olivia Rodrigo Dresses as a Sexy Cowgirl at 19th Birthday Party with BFF Iris Apatow

Olivia Rodrigo had the best night on her 19th birthday!

The “Driver’s License” singer was spotted dressed as a sexy cowgirl while attending her party at SHOREbar on Sunday night (February 20) in Santa Monica, Calif.

Olivia was festive in a “birthday girl” hat and a pink skirt that read, “Eat Me Please I’m So delicious.” She was joined by her best friend Iris Apatow, who also wore a cowboy hat. Iris’ new boyfriend Ryder Robinson and singer The Kid Laroi were also spotted in the group.

Photographers say the group arrived at the spot at 11:15pm and left around 1:20am.

Olivia took to Instagram the next day to share photos from the fun evening. She wrote, “thank u for all the birthday luv! i am now 19!!!!!!! 💕💕💕💕💕”

Did you know Iris‘ boyfriend Ryder has VERY famous parents, and so does she!

Click through the gallery for 70+ photos of Olivia Rodrigo and friends at the birthday party…