These babes sure know how to wrap up 2012 with a bang: introducing the four babes of December competing for Babe of the Month.

Nothin' like a little friendly competition to keep you warm, as winter creeps in. Between Marcia's exotic beauty and slammin' body, Siobhan's blonde-next-door appeal, Case's lack of a shirt, and Brittany's bombshell looks, how could we ever choose? We won’t. You will. You've got 24 hours -- who is our December Babe of the Month?

Click on their names below to see more, and vote for your favorite in our poll.

Marcia Brazil

Model Mayhem

Siobhan McNamara

Alvarado/Model Mayhem

Case Michelle

Model Mayhem

Brittany Brousseau

Here’s the deal: At the end of the week, each Babe of the Day will compete for your votes and the winner will become Babe of the Week. Each week’s winner will then face off to become Babe of the Month, and those winners will then duke it out for – you guessed it – the Babe of the Year title. Only those lucky ladies will be inducted into GuySpeed’s Hall of Fame, an honor reserved for the hottest of babes.