Stars make enough money to either have gastric bypass surgeries or get liposuction in various parts of their bodies. They also have major access to personal trainers and nutritionists who can have them burn those calories the old fashion way.

In September, actress Kirstie Alley, 60, walked the 2011 New York Fashion Week catwalk in a frame that was 100 pounds less than what it used to be.

Alley revealed that she went from a size 14 to a size 6.

NO surgery, NO flippin lasers, NO barfing, NO starving . . . Jeez . . . my products, organic food, dance. end, Alley wrote on Twitter.

Alley created Organic Liaison, a weight loss program, with the help of scientists and nutritionists. According to its Web site, Organic Liaison promotes healthy weight loss solutions and long-term control.

Recents reports are that Alley has started regaining weight. But she looks just about the same to us.

Alley's friend, Kelly Preston, also dropped the baby weight she gained in the months following the birth of her son, Benjamin Travolta, back in November 2010.

Preston, 49, told People that she turned to Alley's weight-loss program to slim down. She is now the spokeswoman for Alley's program.

It's pretty much the most genius thing ever, Preston has said of the program.

However, they have chosen to slim down, we've compiled photos of some of the most amazing celebrity weight loss we have ever seen.

Start the slideshow to see the photos. If there are any others you think should be added to the list, let us known in the comments box below.