Spears, Rihanna shock with onstage kiss at Billboard Awards

Eight years after shocking the world by kissing Madonna onstage, Britney Spears repeated a tamer version of the act with Rihanna at the Billboard music awards.The 29-year-old pop princess received a hug and a wet one on the cheek from the R&B star as they performed onstage at the awards in Las Vegas on Sunday.The 23-year old Barbados born singer kissed Britney after they performed her hit single