Kristen Stewart posed in a blue skirt and black blazer by Stella McCartney at the premiere of "My Valentine" in LA last night. The event celebrated Paul McCartney's latest music video, which includes appearances by Johnny Depp and Natalie Portman. Other fashionable faces came out for the fete, including Gwyneth Paltrow, Reese Witherspoon, Gwen Stefani, and Miranda Kerr. Miranda wore a black dress by Stella McCartney while Rumer Willis arrived in a similar look by the designer, who was also on hand to toast her father.
Kristen had her own celebrating to do this week since she turned 22 on Monday. We recognized Kristen's birthday by taking a look at her transformation into a sexy star over the years.