I have big thighs too. You'll probably never get them to the size that you want. We're all genetically predisposed to have a certain shape, and you just can't beat it. However, you may be able to get your thighs a bit smaller if you haven't been working out very intensely (and are ready to start, at least for a while). I have read that some people think that there are some fat cells that you can only burn by working out and not by dieting. And you do have to work out for a while before you start burning fat instead of energy stores that you already have. I wouldn't try to add much thigh work to your workout routine. That will just build muscles in your thighs. When your body burns fat for energy, it gets it from all over, not just the part being worked.