Lily Allen   Could Lily Allen's much-anticipated clothing label be doomed before it starts? Reports are circulating that the popstrel is rowing with her half-sister, Sarah Owen, who is working on the fashion project with her.

Whispers are that the pair have been arguing over how best to promote their business, Lucy in Disguise.

"The friendship has gone through fits and starts but since Sarah spoke about Lily it has got even worse," a source revealed. "There have been other issues over how much press they do together and how high-profile they make the project. Lily wants to keep the project low-key rather than turn it into a big celebrity thing but Sarah seems to have other ideas. It's causing big problems."