would like to burn the fat, how could I do with?

sounds like you may already know what needs to be done in the weight training area, so i will only talk about the cardio requirements. I usually suggest between 3-4 hours/week of cardio, but for someone that is in pretty good shape and/or needs to lose weight a little faster, I would progress up to 4-6 hours/week. For optimal results, if you are at the gym, don't do one set of cardio for much more than 15 minutes. Switch between the bike, eliptical, treadmill & stair-machine, for example, every 15 or so minutes.

Thank you so much. Could you suggest a special pilates routine to loose 5% fat and work on muscletoning?

You cant really lose weight in one specific area by dieting. Try to eat healthily and do cardiovascular excercise. A little strength exercise aimed at your thighs might help. Im sure your thighs are fine. Just concentrate on keeping healthy and fit.