Guess Who; No Prize For Correct Answer

Bear with me on the guess who; it's a fun one. At least I enjoy it.

By the way, there's a subtle (or not?) hint on the picture.

I've not yet listened to any of her songs. People say she's a great singer. How true is that?

Lily Allen with a muffin to go with her coffee. 'Muffin top' that is - referring to the roll of flesh spilling over her trousers.