AceShowbiz - British singer Lily Allen has fueled speculation she's set to wed boyfriend Sam Cooper after showing fans a picture of herself wearing a diamond on her ring finger. The "Smile" hitmaker's partner is said to have proposed while they spent 2010 Christmas at a resort in Bali, Indonesia.

Allen has been keeping quiet about the swirling rumors but now appears to have confirmed them by showing her online followers a snap of what is believed to be an engagement ring. In the picture, which was posted on Allen's official blog on Monday, January 10, the singer can be seen wearing a diamond sparkler as well as a studded band on her marital finger. A caption reads, "A girl can't do Manhattan sans (without) manicure."

The reported engagement comes after Allen lost a baby son six months into her pregnancy in October.