There is no FAST way. I have been going at it for about three months. I drink a lot of water while also doing squats and lunges with weights. I do other exercise vids with leg weights. I do know that my legs are stronger and I have controlled my cellulite. I am also using a skin firming cream/anti cellulite cream to also help. it takes a lot of time and dedication. It does not happen in just a few weeks. I would recommend starting now but keep at it every day.
edit: basically build muscle in that area. what i also do is clim stairs every two steps because it also firms up that area.