Pop star Jessica Simpson served up a sweet treat for boyfriend Tony Romo's birthday at the weekend - she licked cake from his face.

The couple joined friends at Dallas, Texas club Suite to celebrate the American football hunk's 28th birthday early - and Simpson made sure it was a night her man wouldn't forget.

She presented him with a star-shaped cake and sang happy birthday to the sports star, before smearing his face with the sponge surprise.

Simpson then insisted on licking the cake off her beau's face, according to clubgoers.

Well she needs to do something to take the attention away from little sister Ashlee seeing as she can't tart up.

Dallas Cowboys star Romo turned 28 on Monday.