Kate Upton

Not The Main Attraction

... For Once

3/22/2013 5:20 PM PDT BY TMZ STAFF
Kate Upton put on a tight dress, jumped on stage with Flo Rida, shook her ass, and poor girl still got upstaged ... by two geeky band dudes. Crime of the century, y'all.

Check out TMZ on TV -- click here to see your local listings!