Wanna See Kate Upton Working Out Her Butt? (Pics)

Kate Upton workout main

What’s Kate Upton‘s secret to a bangin’ body and a tight butt?  Squats, of course.

The Sports Illustrated swimsuit model was recently spotted working on her caboose during a private workout session, and some peeping Tom was there to snap some pics from outside the gym.

Creepy?  Definitely, but we’re not complaining.  Here are the pics (via Joblo):



Tags: kate upton, Sport Illustrated swimsuit, squats,