The best advice I can give you is exercise daily and eat well. Eat at least 5 portions of fruit or vegetables a day. Try to cut out as much sugar and snacks as you can manage. Drink plenty of water. Exercise for about 30 minutes a day, remember this does not have to be running a million miles and lifting 10 ton weights. Walking is an excellent form of exercise and is great because you can walk briskly around shops whilst looking at really cute outfits!

I hope this helps!