Kate Upton caught all eyes as she struggled to contain her breasts while fooling around on set of new movie 'The Other Woman'.
The 21-year-old former model showed off her bouncy chest as she danced around the set in a white top, which slipped down to reveal her bright yellow bra, the Mirror reported.
As the Sports illustrated model jumped around with co-star Leslie Mann, who sported a pink hooded top and floral trousers, her top almost fell down completely revealing her modesty.