Hold on to your childhood memories everyone, they're about to be dashed as Melissa Joan Hart has revealed she used to take ecstasy, magic mushrooms and marijuana during her days as Sabrina Spellman.

Yup, the star of 'Sabrina the Teenage Witch' had several drug-fuelled nights over an 18-month period when on the show, and recalls one occasion when she took ecstasy at Hugh Hefner's Playboy Mansion in 1999 and kissed a girl during the limo ride home.

Speaking to Life & Style about her new tell-all book 'Melissa Explains it All' said: 'I experimented with weed, ecstasy, mushrooms and mescaline for about a year and a half.'

In the book the former child star claims Paris Hilton once offered her cocaine - an allegation the 32-year-old heiress' representatives deny (which is all sorts of lol) - but she turned down the offer. Sabrina Melissa insists her experimenting never led to addiction and she eventually realised she needed to find a new group of friends, but not before once turning up to a Maxim magazine photo shoot while still high on ecstasy admitting that 'That was my third or fourth time on ecstasy. I was kind of running with a bad crowd. I just didn't enjoy taking drugs. I don't like the loss of control.'

Clarissa also explained all about several stars she kissed including Backstreet Boys singer Nick Carter and 'Scary Movie 5' star Jerry O'Connell, who she refers to as a 'man-w***e'.

But she has no love lost for Ashton Kutcher and admits trying to get him booted out of her parties for making 'smartass remarks', saying: 'Ashton and I just didn't get along.'