First, let's address the elephant in the room: there is no way to target specific areas for fat loss.
Instead, the solution is to build overall core strength, and that includes the OBLIQUES.
This is a muscle group often under-trained. Big mistake!
Watch this video on how to train your OBLIQUES.
Include these in your workouts and combine it to a calorie deficit regimen. You can then resume to a calorie maintenance once your body is lean enough.