There is a site called My Virtual Model. On there you can customize an avatar to your colouring, sort of your age and your weight and height. You can then change your settings to see what you might look like at your goal weight. It is a lot of fun and if not entirely accurate...somewhat inspiring.
Go to:
www.mvm.com
I look pretty damn hot although in feedback I did say that as people hit "more mature" on their model..the chest area needs to drop a bit no matter how good the bra may be