Gwen Stefani, Michael Angel Dress Drama

Gwen Stefani
Photo: Getty Images
Gwen Stefani in the controversial black dress at amfAR's Cinema Against AIDS Gala.

Gwen Stefani is learning the hard way that no good deed goes unpunished.

Though the singer helped raise more than $125,000 by auctioning her shimmering black dress (billed as a "creation of her own, by L.A.M.B.") at the amfAR Gala in Cannes, she's now facing allegations that she didn't design the dress after all, The Cut reports.

Designer Michael Angel is claiming he custom-designed the gown—which boasts a belted waist and a lacy halter neck—using lacework from his Fall 2010 collection.

L'Oréal Paris, which shot Stefani in the dress for an upcoming campaign, credits Angel as a stylist, but his studio insists that his contribution was more significant.

"In choosing [a dress for amfAR], we just said, 'Let's make one,' which is a whole other job in itself," a rep for Angel tells The Cut.

Perhaps that lucky bidder can clear this up and check the label?