Cody Simpson Takes You Behind the Scenes at His Birthday Bash With Miley Cyrus

Australian Cody Simpson is a musician, yes, but he's also known for his extremely photogenic relationship to model Gigi Hadid and his friendship with many of Hollywood's hottest young stars. One person he's closest to, though, is his sister, Alli, who currently hosts a show on Radio Disney. Watch as they take you behind the scenes of their fabulous life in LA — including Cody's 18th birthday party with Miley Cyrus — and meet their adorable mom, Angie, in this video for Teen Vogue.