Kara DioGuardi
'American Idol' star Kara DioGuardi laid herself bare for the newest issue of Allure -- literally.

The judge, along with 'Grey's Anatomy' doc Jessica Capshaw, singer-songwriter Colbie Caillat and 'Entourage' hottie Emmanuelle Chriqui posed naked for the magazine.

See photos of Capshaw and Caillat Inside. (Chriqui's are too hot for us to handle!)