Every year, "The Ultimate Guys' Guide" breaks down its authoritative list of the most attractive women in the world, with a round of fan votes determining who takes the top honors.
This time, you can vote for Rousey, Palmer and Celeste, who join a competitive field of nominees including the likes of actresses Jennifer Lawrence, Emma Stone and Mila Kunis. Also included are famous models like 2012 Sports Illustrated Swimsuit Issue cover girl Kate Upton.
Celeste is a repeat performer for this group, making this her fourth-consecutive year in the rankings. After a setback in 2011, she's since climbed back up the list but has yet to top her 2010 status:
• Arianny Celeste - #58 (Maxim Hot 100, 2012)
• Arianny Celeste - #70 (Maxim Hot 100, 2011)
• Arianny Celeste - #23 (Maxim Hot 100, 2010)
Rousey especially has a strong case to vault herself into a high spot this year. In 2012, her MMA career reached its highest point ever with two dominant first-round submission wins over former Strikeforce champions Miesha Tate and Sarah Kaufman.
As if that wasn't enough, Rousey also made history by becoming the first woman to join the UFC, as company president Dana White formally awarded "Rowdy" the UFC women's bantamweight championship belt last year.
On the strength of a critically-acclaimed performance in the movie Haywire, Carano nearly notched a "Top 10" ranking at the No. 16 spot, which landed her just behind Katy Perry (No. 15), Christina Aguilera (No. 14) and Jessica Alba (No. 13).