Australian Cody Simpson is a musician, yes, but he's also known for his extremely photogenic relationship to model Gigi Hadid [1] 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 [2] — including Cody's 18th birthday party with Miley Cyrus [3] — and meet their adorable mom, Angie, in this video for Teen Vogue.