Cameron's Sand Bags

4/2/2007 1:04 PM PDT BY TMZ STAFF
Eat your heart out, Justin Timberlake!

Hawaiian beaches got a lot steamier on Sunday when Cameron Diaz frolicked surfside in a multi-colored bikini. Mahalo!

With apologies to Tara and Courtney, the tanned and toned brunette, who helped some children make sandcastles, proved she was the hottest thing under the sun!