Rihanna grabbed her crotch while performing at the Formula 1 post-race concert. Princess RiRi also threw on some fishnet tights that cut off at the knee and a white pair of her fave Comme des Garcons sneakers.<br /><br />For more Hollywood news and gossip:<br />http://www.youtube.com/hollywoodbackstage<br /><br />Subscribe at: <br />http://www.youtube.com/subscription_center?add_user=HollywoodBackstage<br /><br />Like us on Facebook:<br />http://www.facebook.com/hollywoodbackstage<br /><br />Follow us on Twitter:<br />https://twitter.com/#!/HollywoodBstage
