Jessica Alba is a certified sex symbol and has spent much of her career on the top of "hottest" and "most beautiful" lists. Jessica's enviable, eye-catching looks may be her calling card, but she's not afraid to change things up for a role. She's gone white-blond and fiery red, and doesn't shy away from flirting with fringe every once in a while. Nowadays, with a little one at home and another on the way, her flawless skin looks naturally gorgeous and glowing. To celebrate Jessica turning the big 3-0, we're taking a look back at her beauty evolution.