LAURA CONRAD SLIPPED ROOFIE

Hills LC felled by spiked cocktail.

The brazen beauty was partying with pals and then-boyfriend Jason Wahler.at a tony Hollywood bar two years ago when she sipped her drink and felt woozy.

Someone had slipped her a roofie - spiking her drink!

"Luckily I was with a group of friends, so it was fine," Laura revealed, and to this day she has no idea if the culprit was a frenemy or stranger.

"She had no idea who did it," an insider revealed.  "Really unsettling."