Monday, June 20, 2011 - Former BFFs Paris Hilton and Nicole Richie attend the Britney Spears concert at Staples Center. Paris Hilton arrives with sister Nicky Hilton and stays mum when asked if she's calling it quits with Cy Waits. Then Nicole Richie leaves and draws a frenzy of photogs as she covers herself with the help of a mystery man all the way to her car. Paris and Nicky Hilton leave with a little less commotion, and we also catch a glimpse of Britney Spears' caravan leaving the venue.