2AM's Jo Kwon has�sent out a few celebratory selcas! On August 29th, Jo Kwon tweeted, "Thank you to everyone who congratulated my 23rd birthday! Thank you to all my fans!". In the attached pictures, Jo Kwon dons a birthday hat and glasses. He smiles cutely as he poses for the camera. Netizens commented, "Happy birthday!","You look like a child!", and "So cute, so cute!"