5 Kgs to go....

What is the fastest way to burn fat? Do you know? Care to spill the beans? I've been trying hard to lose some weight... My H said that I HAVE TO lose at least 5 Kgs before I am allowed to board the plane for our year end holiday with the boys. It is going to be a 3-week holiday and we are sure to binge on all the yummilicious foods available. He does sound cruel, but I supposed he's afraid that I won't be able to fit into my clothes - and would have to SPEND his hard-earned money on a new expanded wardrobe!