Help to burn stomach fat?

I am having trouble burning my stomach fat. I started using this MFP account about two and a half months ago. I started at 155 pounds and I'm already down to 137! So, with that, I am extremely satisfied. But I still have my stomach fat and I'm struggling to lose it. Even with 18 pounds lost, my stomach still appears to be almost the same as it was when I started. I'm not expecting to get a "perfect" flat stomach but I feel like my gut should not be this big. It's not like a beer belly or anything, and when I am fully clothed I appear quite thin, but if I am in a bikini or something, I feel as if my belly looks a little "fuller" I guess you could say.

Does anyone have any tips to help burn stomach fat?