Healthy Weight loss for Marriage in 2 months

Hey.... I am 5 feet 1 inch ,quite a short height and weigh 64 kg ... My face doesn't carry that much of fat and neither does my lower body much ... The whole fat is onto my upper body ... i am getting married in 2 months... I look healthy is what all say ... But its actually called being Fat in a cute way! :| i used to weigh 54 kg 2 years back but then i put on weight because i used to do aerobics and then i left them and so i put on weight outta sudden ... there was this fluffiness in my body which is a lot reduced ... i used to walk up and down the stairs at my place for half an hour .... didn't help a lot but to an extent it did.... my only problem is that i sleep a lot ... and irregular eating habits ... though i don't eat much either.... I am trying to manage my sleeping disorder now ... Is there anything that i can do to help with my hypersomnia? and also what all can i do to lose weight? i want to reduce 15 kilos in 2 months ? would that be appropriate for my height? I have been walking for half an hour every day since a month ... that is what i focused on firstly with ... and now i started managing my sleep and also started with lemon water in the morning .... so what should i do to accelerate my weight loss? its been about 26 days since i started walking ... haven't checked my weight yet though ... and yes... i cant control on my diet .. i mean i need to eat every damn thing .... and yes i don't each much but i need to have it ... cravings u see :D i don't help them :P Anyways PLEASE PLEASE tell me what to do ??? I am getting married and i need to look my best on my wedding day !!!!!! Its just with my upper body and stomach .. i don't want to do Abs cos again if i leave doing that i will put on weight ... Also that the freshness in my face shouldn't go ... i do do the artificial things to help enhance my beauty ... i believe in being natural about everything !!! PLEASE HELP!!