Cody Simpson Celebrates “Wild” 18th Birthday With Miley Cyrus, Justin Bieber, Gets Kiss From Gigi Hadid — See the Pics!

Cody Simpson and Gigi Hadid
Cody Simpson gets a kiss from Gigi Hadid on his 18th birthday  RPB Studio by Rony Alwin

Officially legal! Cody Simpson celebrated his 18th birthday with a young-Hollywood filled party in Malibu, Calif., on Sunday, Jan. 11. Famous pals including girlfriend Gigi Hadid, Justin Bieber, Miley Cyrus and her boyfriend Patrick Schwarzenegger, Jaden Smith, and his sister Alli Simpson were in attendance.

birthday boy got thrown in the pool ???????? @ronysphotobooth

A photo posted by Gigi Hadid (@gigihadid) on Jan 13, 2015 at 10:09am PST

Keeping it casual for the house party, the birthday boy donned a backwards hat and black T-shirt, while his model girlfriend, 19, opted for a black crop top and green tribal-print coat. “Birthday boy got thrown in the pool,” the Sports Illustrated model captioned an Instagram with her beau, who was soaking wet.

PHOTOS: Young Hollywood 

Before getting tossed in the pool, the breakout singer was feted with a pizza-themed cake, presented by pizza megafan Cyrus herself.

Cody Simpson and Miley Cyrus
Cody Simpson celebrates with Miley Cyrus. RPB Studio by Rony Alwin

Prior to his actual birthday, the Australian singer kicked off the celebration on Saturday, Jan. 10, with a smaller bash at the Nice Guy in Los Angeles with his lady love Gigi and fellow pals like Selena Gomez. Gomez and Bieber, however, managed to avoid one another: Gomez skipped the Sunday shindig.

Cody Simpson and Justin Bieber
Cody Simpson and Justin Bieber. RPB Studio by Rony Alwin

"Happiest of birthdays to bubba and such an incredible person," Gomez shared on Instagram while posing with Simpson. "Love you inside out @codysimpson – here's to more"

"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,” Simpson tells Us Weekly of the smaller, more intimate bash at the beach pad.

Happiest of birthdays to bubba and such an incredible person. Love you inside out @codysimpson -here's to more ??????????

Une photo publiée par Selena Gomez (@selenagomez) le Janv. 11, 2015 at 12:20 PST

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