Gentlemen, we're about to ask you a very tough question. It's a conundrum that's challenged male minds throughout the ages, sparked heated pub debates and split opinion across all men: just who is the world's hottest girl?

Well, to settle this once and for all, we're challenging you lot to come up with the definitive list for ZOO's Hot 101 Girls.

The choice is all yours. ZOO loyalists may look close to home and decide our very own Madison Welch, Kelly Andrews (both above left) or Alice Goodwin top the lot. Here's a quick reminder of some of the incredible honeys you can choose from.

Music lovers might champion Cheryl Cole or select The Saturdays' Frankie Sandford. Film fanatics will big up Megan Fox's chances or decide Jessica Biel deserves the nod. But however leftfield or obvious your choices, we want to hear them. Get 'researching', fellas!

Voting couldn't be simpler. Simply fill in our simple form below. Once we've counted up the votes, we'll settle all debates and reveal exactly who is at the pinnacle of our Hot 101 Girls list!