Justin Bieber in Balmain Silver Sleeve Bomber Jacket and YSL Logo T-shirt

Justin Bieber attended his manager Scooter Braun’s 30th birthday celebration in Los Angeles this past weekend. He wore the celeb favorite Balmain silver sleeve bomber jacket ($5,370) from the Spring 2011 Collection which he layered over a black Yves Saint Laurent logo t-shirt ($285).

Star Style - Joe Jonas

Joe Jonas was seen with his girlfriend Ashley Greene arriving for a flight at LAX airport carrying a Louis Vuitton Michael damier graphite backpack ($1,530). This backpack is definitely a celeb favorite as Matt Kemp, Jamie Foxx, Justin Bieber, Swizz Beatz, Chris Brown, and Fabolous have all been spotted toting it around.