The onscreen competition may not be fierce for some of these super sexy costars, but once they hit the sand and shed their layers, it's survival of the beach body fittest!

Breaking Celebrity News has lined up some of the most sizzling starlets who have shared the big screen in this week's Bikini Wars.

Drop Dead Gorgeous Kirsten Dunst and Denise Richards undeniably are, but who is a bigger man killer when it comes time to strip down to their swimsuit?