We wondered last month what fashion-savvy Jennifer Aniston would wear to this weekend's ceremony, once it was announced that Spike TV would be honoring the film and TV star with an award for her 'Decade of Hotness.'

Keeping it simple, Aniston, 42, went with a short LBD (little black dress) to look her best at Saturday's 'Guys Choice Awards.' Her oversized trophy was presented by her 'Horrible Bosses' co-stars: Jason Sudeikis, Charlie Day and Jason Bateman.

If a night about guys voting for their favorite beauties sounds like a sweaty testosterone-fest, that didn't stop a number of other famous females from dressing up and strolling down the red carpet.

Cameron Diaz, Eva Mendes and Minka Kelly (who was up for the 'Holy Grail of Hot' award, but lost to Mila Kunis) were all spotted at the Los Angeles event.

Backstage, Scarlett Johansson sparked some fresh buzz about her love life when she was photographed with Sean Penn -- see photo here -- just days after the couple's breakup made headlines. The two were all smiles, and they arrived separately for the show, avoiding questions about their personal lives while walking past press.