Heath Ledger enjoyed indulging in cocaine and ecstasy binges with Naomi Campbell in his early days as a Hollywood star, according to the supermodel's former assistant. Rebecca White worked for the British catwalk star for three years from 2001, and claims she witnessed the extent of the tragic actor's drug addiction several times during her employment. She tells British newspaper The Sun, "When I was working for Naomi I saw Heath do drugs a few times. He was new on the scene but everybody was hailing him as the new It Boy actor. "We had been hanging in Naomi's bungalow at the Bel Air Hotel. Heath asked Naomi if she had any cocaine - I use to carry it around for her - and I remember giving him the packet and he went off, back and forth throughout the night." At another celebrity event, White claims to have seen Ledger take ecstasy with reformed addict Campbell: "We went to... (a) party at this club. There was coke and a big bag of ecstasy pills. Naomi gave Heath a handful of these little blue pills and I remember him putting them all in his mouth at once and swigging a bottle of Cristal champagne." And White also alleges to have bought cocaine on behalf of the Brokeback Mountain star on more than one occasion: "Each time I got an eight ball, which is four-and-a-half grams. The second time he came up all three of us spent a night doing coke in her (Campbell's) bungalow. It was quite decadent. We were there for five or six hours doing lines." But White, who went on to work as a personal assistant for actress Claire Danes - a close pal of Ledger's ex-fiancee Michelle Williams - admits the actor was desperate to change his lifestyle following the birth of his and Williams' daughter, Matilda, in 2005. She adds, "Heath felt that he really wanted to be a family man. He adored his daughter." Ledger was found dead in his New York apartment on Tuesday (22Jan08). An autopsy carried out on Wednesday (23Jan08) failed to reveal how the actor died, although police believe his death is drug-related as sleeping pills were found by his bed.