Australian pop star Cody Simpson has reportedly struck up a romance with the stepdaughter of legendary record producer David Foster. The 16 year old has been linked to Gigi Hadid, whose mother is model-turned-reality TV star Yolanda Foster, who wed her songwriting husband in 2011. Simpson and Hadid, who is also carving out a career as a model and has appeared alongside her mother on The Real Housewives of Beverly Hills, reportedly began dating earlier this year (13) after initially starting out as friends. A source tells Usmagazine.com, "They've been friends for a while, it turned romantic this year. They are very adventurous and like to party with friends. It's very easy between them."