It's Friday, and that means it's time for another sexy Twitter showdown!

We've known @chassidyluke (left) for a while; she was our Babe of the Day back in September. You may have also seen this music-loving, self-proclaimed jet-setter in 'American Curves,' or 'Planet Muscle.' Chassidy splits her time between Vegas and Los Angeles.

Her competition this week is @brittanynj1212 (right), a model who calls herself a "Professional Southern Influence," and is a promotional model for #HickLife. She says she happy, blessed and positive.

So, which pic is hotter? Vote as often as once an hour, and the winner will advance to the next round! Voting ends on 4/25 at noon, EST.

Official Rules

The winning girl moves on to challenge another girl next week. If one woman dominates and wins four weeks in a row, she makes the ‘Model Melee Hall of Fame’ and gets retired from the competition. At the end of the year, all Hall of Famers will return, to face off in the crowning of the ‘Grand Hot Twitpic Champion’ (or something – we will come up with a better title by then.)

Want to be featured in ‘Model Melee?’ Tweet the photo to @Guy_Speed.