Demi Lovato is no Disney darling anymore. The pop star,19, stunned onlookers when she debuted a dramatically more mature look, att the12th Annual Latin Grammy Awards in Las Vegas. Wearing a cleavage-baring magenta gown, the \"Skyscraper\" singer oozed confidence on the red carpet. Lovato, who performed with singer Pablo Alboran during the show, recently told “Latina” magazine that it\'s been her goal to attend the Grammys/ I don\'t want to go unless I\'m nominated, presenting or performing. It\'s my lifetime goal to be able to say I\'m nominated,\" she said. \"So I really want to make that happen.\"