Reality personality Lauren Conrad has revealed that she once had her drink drugged during a night out on the town.

“I actually had someone put something in my drink while I was out and had no idea,” she says.

“Luckily, I was with a group of friends, so it was fine. But you have to be careful.”

In conjunction with Avon’s Mark cosmetics, the 22-year-old star of MTV’s The Hills has started to campaign to combat teen dating abuse. Lauren is now a spokeswoman for m.powerment, an advocacy campaign for women ages 16 to 24.

“It’s a difficult age, and you don’t have a lot of experience in dating, and you don’t know what the norm is and what’s acceptable.”

“Dating abuse isn’t something that’s normally talked about. It has such a stigma to it.”