Kristen Stewart shared a hug with Sean Penn yesterday as they met up in LA. The pair go back to when Sean directed Kristen and Emile Hirsch in 2007's Into the Wild. Sean's also rumored to be teaming up with someone close to Kristen's heart, Robert Pattinson, when the boys work on Water for Elephants with Reese Witherspoon. Mr. Penn is quite the social Hollywood guy these days, especially considering his apparent Valentine's Day celebration with Brad and Angelina. Kristen, meanwhile, seems to be easing herself back into the limelight in the run up to The Runaways' release next month. She was also out last weekend at a fundraiser for Haiti with a few friends and a pair of high heels.