Cody Simpson celebrated his 18th birthday this weekend, and stars like Justin Bieber, Gigi Hadid, and Moises Arias attended his huge celebration. In fact, Miley Cyrus and her boyfriend Patrick Schwarzenegger even brought him a pizza-themed birthday cake to top off their crazy night. (Given his history of defending the her, we're not surprised.)

"I had an awesome 18th party at a beach house in Malibu, with some of my mates from Australia and some new friends from the states. Things got pretty wild," he EXCLUSIVELY told us.

Sounds like a fun time!

Click through to see more pics from his birthday, and let us know which one is your fave in the comments.