Spike TV's Guys Choice Awards is technically all about the boys, but we think Jessica Alba stole the show in not one, but two sexy looks. Her first choice was a strapless, bright yellow, crocodile-print Versace dress that put both her décolletage and legs on display. For further fun, she added contrasting red pumps and a retro hairdo to finish. Then, for her onstage ensemble, Jessica changed into a more demure two-toned Narciso Rodriguez dress with embellished sandals and mini chandelier earrings. The first look didn't lack in the sass department, while Jessica's outfit change gave her an undeniably chic finish to the night. Tell us: which of Jessica Alba's Guys Choice Awards ensembles do you like best?