Britney Spears at the Teen Choice AwardsBritney Spears thought Jessica Simpson stepped over the line on Sunday when Jessica asked if she could kiss Britney’s pregnany belly.

The two of them met backstage at the Teen Choice Awards after Britney had introduced Kevin Federline’s performance.

Jessica, who was hosting the event, ask if she could kiss Britney’s 8-months-gone bump and Britney indignantly replied “hell no!”

A witness of the exchange told Us Weekly: “Jessica was really insulted, but Britney refused to let her do it.”