Michael Bay's Lady Friend Decepticon-ly Tiny Bikini

9/7/2011 12:45 AM PDT BY TMZ STAFF
0906_michael_bay_splashWhat's the difference between Michael Bay and his lady friend's bikini bottom? Only one of them was extremely uptight in Miami yesterday.

FYI -- for your Googling pleasure, her name's Lauren Stoner. And duh, she's a model.