Hi guys! So long story short, my prom is next month and recently i put on a little weight so i need to get it off. I'm very sedentary but don't tend to put on weight so this is the first time I've put on a few pounds

I don't really care about weight, but my dress has an exposed midriff and my tummy is kinda...looking like im pregnant lol.

Any tips on how to lose belly fat? Any foods i should avoid etc?