Need To Go On A Diet Fast!

I really need to lose weight. I have not gotten on the stick yet to do anything about it. Not only am I going on a cruise in January, and I need to look halfway decent, but I need to lose weight to attract men better. Now, no lectures please. I know that when I am thinner, men find me more attractive. There is no doubt about that, so don't try to tell me otherwise. A friend of mine is sending me a diet and I might try a diet pill, maybe Fastin or something.