Britney Spears is considering filming a post-pregnancy fitness video. After giving birth last month to her first child, Sean Preston, the singer has shed a lot of her pregnancy pounds and wants to line up a host of celebrity mothers to star in the video. A source says, “It’s a bit of a sparse class at the moment so Brit’s desperately trying to find other well-known new mums to star in it.” Britney’s video may be motivated by the desire to further dispel rumours that she had a tummy tuck to help her get back into shape.