21 year old Singer Selena Gomez looking all grown up in a sexy black slitted skirt

Selena Gomez, 21, looked like a grown-up woman in a sexy black ensemble as she waved hello to dozens of onlookers outside the Late Show with David Letterman in New York City.

The singer – who cried for her fans the night before during her Stars Dance concert in Brooklyn – smiled as she signed autographs and was gifted with a bouquet of flowers.