Over three months’ ago, sixteen lucky contestants secured the opportunity of a lifetime when they were selected to be a part of Season Seven: The Biggest Loser Singles. With a tempting $250,000 Prize attached, the search for the Biggest Loser was on.

Having seen the show in previous years and knowing what’s involved, these lucky few said yes to change their lives and no more to their unhappy past. Pitted against each other, the contestants were asked to put their lives in the hands of four Trainer professionals to help guide them to a new and healthy way of living.

For one contestant, the tempting offer to swap his spot for $30,000 was accepted and deducted from the pool prize. It was a survival of the fittest as weekly Challenges, tantalising Temptations and nail biting Weigh-In’s proved the strongest contenders in the Competition.

The contest is now down to just four of the surviving Singles: Alex, Kasey, Brenda and Margie. With Finale drawing close, these contenders will go head-to-head in a battle that will see one contestant emerge as the Biggest Loser Single for 2012.

See how the four remaining contestants have physically changed over the weeks, in their unbelievable contestant Transformation Galleries.