How to get a small butt?

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Hi,
So I really want to get a small but because my agency needs me down a couple of inches off my hips and I think my butt is the main portion of the measurement. I eat about 1400 cals a day and try to exercise everyday as well. I am 5'10", I weigh about 134, and my measurements are currently 32-24-37. I need to be a 36 and I've actually lost an inch around my hips so far so that's really exciting! But now I can't seem to get the other inch off :/ So do you guys have an tips/ advice on how to get a smaller butt and slim down hips?