I will start my diet!.... Tomorrow!

I'm due to be a bridesmaid next year and I really wanna look good I don't want people to whisper things like "have you seen the fat one?" I really want people to say "you look lovely" I will lose wight I will start excersizing I will slim down
Because I've noticed that I've got bigger all I do is eat and moan thats it so I'm gonna start taking the dog for walks LOOOOONG walks im gonna do sit ups to tone up and eat properly to shed pounds.
I just wanna look good!