Amy Winehouse once stole cocaine from supermodel Kate Moss’ handbag, if the word of the “Rehab” singer’s junkie ex-husband is to be believed..

In a tell-all chat with Britain’s The Sun, Blake Fielder-Civil has claimed that Amy swipped two grams of the powder from the supermodel’s purse at a star-studded bash in New York so the pair could snort it in the john.

Blake claims cocaine was freely available to guests at the bash, held at the posh Gramercy Park Hotel just weeks after Blake and Amy married in Miami in May 2007.

“There was plenty of cocaine on a table in the room available to everyone,” the 27-year-old reveals.

“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,” Blake recalls. “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 added.