London, July 28 - Troubled British singer Amy Winehouse's estranged husband Blake Fielder-Civil has claimed the 'Rehab' singer once stole cocaine from supermodel Kate Moss' handbag.

Fielder-Civil claims Winehouse took two grams of the Class A drug from the supermodel-turned-designer's handbag at a star-studded bash in New York so the pair could snort it in the toilets, reports femalefirst.co.uk.

'Kate Moss and another supermodel were there, as well as Hollywood actresses. Kate had told Amy to get a 10 dollar note out of her handbag to snort lines with. But Amy told me she found two grams of cocaine in there so she nicked them. We did some in the toilets and had sex, but we did the rest in front of everyone... Kate was so drunk, she never noticed it was missing,' he said.

The 27-year-old ex-convict claims cocaine was freely available to guests at the bash, held at the Gramercy Park Hotel just weeks after he and the 25-year-old singer married in Miami May 2007.