Trying to get toned up for school?

Ok, this is the situation. I'm 15 (well pretty darn close) and I weigh 137 pounds. I'm about 5'6 or so. It's June and this summer I want to get toned up and fit for school in September. I'm trying to change my diet and eating habits, so far i have cut out soda and have started drinking water in place of it. I'm also considering going semi- vegetarian and not eating red meat. In addition to these changes I'm trying to also add some sort of exercise regimen, to help with the toning. I have been considering pilates, because I have heard that it works well with that. The main areas of my body that I am working on are my stomach (I have a little pouch) and my thigh area. It would be nice to have a more toned butt, but I guess I like it's umm size. Do you think these changes will help me get toned by September? Any advice would be greatly appreciated.

i know it's old school, but Tae Bo is definitely the best bet. I have the same issue where my weight tends to go mainly to my thighs butt and stomach. last week i started doing tae bo and drank more water and i lost 5 pounds in just ONE week, plus i already noticed a little definition in my stomach and my thighs. Also, I couldnt think of a better exercise to tone up the butt. you're in a squating position for a good portion of the work-out, which flexes and tones ur butt. All the kicks are amazing for your abs too bc your flexing and you dont even know it. Plus its a killer cardio workout so ur toning and slimming.
Pilates is great too. it's amazing for your thighs and abs but it doesnt really concentrate on the butt.

You're definitely on the right track with your new eating habits! keep up the good work!

here's a link to a bunch of different videos. i hope this helps!

plzz tell me your man friend didnt get u started on this