It's hot out there, and Hollywood's sexiest ladies certainly aren't helping the global warming crisis.
From the star with the most enviable body, to the up-and-comer to watch, to a much-anticipated comeback, we're counting down summer 2012's hottest women of Hollywood in our HuffPost Heat Wave challenge.
So, how did these ladies make the cut? We painstakingly perused countless bikini photos, summer movie trailers, red carpets and checkout-lane headlines to narrow down our "Who's hottest?" pool.
Check out the contenders below and vote on who is the hottest summer siren below: