Kate Upton is busting out all over the big screen.

The bombshell struggled to contain her plump cleavage in an unbuttoned camisole top and lacy yellow bra on the set of the Cameron Diaz comedy, “The Other Woman.”

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She risked a wardrobe malfunction as she bounced up and down in while filming a boozy dance scene in West Hampton with her co-stars Diaz and Leslie Mann.

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