Hey Ashley,
Welcome to the forum, i guess.
Well your 16.. are you..? and you weight 160IBS, seeing i live in australia in not to sure of the way you measure things seing we use metic. but i know that im 110IBS.
Well first thing is simple, cut out on ur
fat as much as possible. I know that sounds crap coz everyone loves macdonalds and that is how you gain rapid weight. If you only have 2 months to do it in, then you dont have alot of time, which means you will have to keep up a rather high control of yourself when it comes to food and exersise.
try to walk / run as much as possible during the week and make sure you break a sweat coz thats how you know that u are losing weight. about 30-60 mins of hard
cardio a day will be a good recommendation
If you are big boned in your hip area, well theres not alot you can do about that.. only if you have a large comsuption of
fat around that area. thats when you will c the results from walking..
good luck,
need anymore help just msg me.