Nicole Richie was spotted leaving Britney Spears's concert held at the Staples Center in Los Angeles, on June 20.
Nicole is a huge fan of Britney and has previously stated:
"I have been a huge fan of Britney since I was 16".
"In honor of my queen @BritneySpears - Can’t wait to dance tonight!" Nicole tweeted a few hours before attending the Femme Fatale show, along with a link to her Facebook page with a video of her and a friend getting down to Britney's "I'm a slave for you".
source: isopix, family madden richie, dailymail