December 13, 2012 Diddy, Blake Lively, Olivia Wilde And More Turn Up For 12.12.12 Benefit Concert Edit Delete Tags Autopost Source: http://www.celebrities.com/celebrities-exposed/diddy-blake-lively-olivia-wilde-and-more-turn-up-for-12-12-12-benefit-concert/Ashley Tisdale Asia Argento Aubrey ODay Audrina Patridge Autumn Reeser Avril Lavigne Bali Rodriguez Bar Refaeli