Happy Birthday Selena, indeed! The teen pop star thanked all her fans for making her 19th birthday one to remember! She also received birthday wishes from Glee actor Cory Monteith! While Selena was celebrating, stars like Fabolous, Big Boi, and Chuck Inglish of the Cool Kids all tweeted their gripes at the heat wave many of us are sweating out, Sean Kingston and Soulja Boy are going out on a bro date to tonight's Nicki Minaj concert in Miami and Mark Hoppus of Blink 182 tells his followers why he should win a parenting award. See what your favorite stars were chirping about today!