my ass is falling, my ass is falling!

Note the plumpness of youth in the 2004 illustration, and the way my bum seems to have slid down a little bit onto my thigh in the 2007 illustration. Anyone know how to bump up the bum?

Note the plumpness of youth in the 2004 illustration, and the way my bum seems to have slid down a little bit onto my thigh in the 2007 illustration. Anyone know how to bump up the bum?
Squats, lunges, and the ThighMaster. Not kidding.