April 28th is Jessica Alba‘s birthday! On this day 30 years ago, the lovely latina / naughty Native American / Hottie Body Hump Club member entered our world. About two decades later, she perfected what has become known as The Jessica Alba Ass Pose. Many have tried to recreate this provocation position, but few can match Alba’s ability to induce a catatonic state. Her sexy beach butt looks good in a supergirl costume (*wink* *nudge* Universal *cough* Fox) especially in animated gifs. To celebrate Jessica’s b-day, we’re backin’ dat ass up with a photo gallery of her best butt shots. Happy birthday, Jessica!