How fast can I lose inches (bust,waist,hip) in addition to a healthy diet?

I'm very overweight and on a very good diet now. I have to fit into a certain outfit in three weeks ands it's very tight on me . Also, how many inches is a size?

Public Comments

1. If you are serious about wanting to lose weight and get yourself healthy you can take a look at my profile, what I use is in there. I use the shapeworks program! I can tell you that I really love it and it works well and quick! Good luck to you!
2. To lose inches u just gotta lose weight & tone up! one dress size is around 2-3 inches per measurement thing, e.g waist
3. Ever heard of exercise?