Amy Winehouse forced to cover up topless tattoo by Grammy bosses

Amy Winehouse was ordered to cover up a topless tattoo by prudish Grammy bosses scared she'd offend US audiences.

The 'Back to Black' star used her trademark black eyeliner to disguise the breasts of a nude girl tattooed on her arm as she performed via satellite link from London at the Grammys.

"Amy drew a little black bikini top on the large topless female tattoo on her arm, so as not to offend any of America's puritanical viewers," a source told Britain's Daily Telegraph newspaper.

The 24-year-old soul diva bagged a whopping five awards at Sunday's ceremony after previously being refused a US visa for past indiscretions.

"After the show, the makeshift top was washed off."

Amy is being treated for substance abuse after being filmed smoking what appeared to be crack cocaine last month.