Article continues below advertisementIt's been nearly three decades since Heather Graham lit up the screen in Austin Powers, but she continues to prove she's not slowing down anytime soon. The bombshell, 55, exuded confidence as she showed off her snatched figure in a tiny bikini in photos posted via Instagram on Thursday, January 15. Article continues below advertisementHeather Graham Posed in a Tiny Navy BikiniSource: @heathergraham/InstagramHeather Graham turned heads by posing in a tiny navy bikini.