Happy 19th birthday, Selena Gomez! It's kind of amazing that the young celeb has had so many impressive red carpet moments, and she's still in her teens. It's not easily that a child star makes that transition from family movies into young Hollywood, but Selena Gomez is already beating the odds. With the recent release of Monte Carlo and a music career that may well just be heating up, too, Selena's got no shortage of red carpet appearances and stage performances. We're most impressed by her effortless transition from teen — slouchy tees and skinny jeans — to sophisticated star donning Dolce and Gabbana, Burberry, and J. Mendel with an ease that belies her 19 years. What seem to be Summer baby Selena's style staples? Think evening shorts, flowy tops, and statement heels to make up a playful, yet poised, wardrobe. On her birthday, we're celebrating some of Selena's chicest Summer-style moments.