Hello brides! I need some help from you all... I'm trying to lose weight...and lose it fast.

I've got at minimum of 10 pounds to shed to fit into my dress. Does anyone have any secrets or quick diets that have worked for them????? I've tried everything under the sun...but I only have a few weeks left to go. My last alteration is in May.
HELP! 3 weeks...10 pounds... anyone????!!!!! Thanks,