Selena Gomez showed her sexy side in a tiny light blue bikini on Monday, Sept 17. In a series of photos taken by paparazzi, Gomez nonchalantly turned up the heat for the cameras when she laid on her back and shifts around in a series of casual, sexy poses while chatting on the phone, perhaps to her boyfriend Justin Bieber. View 10+ pictures of Gomez posing poolside in a bikini