The conventional way is to control diet, especially eat less at night, control greasy and spicy, and exercise actively. Special methods include taking ketogenic diet, taking meal replacement powder health food or drugs to lose weight.

I have a suggestion. In addition to the above methods, wearing slimming clothes, that is, corsets, on the day of taking wedding photos will have an immediate slimming effect. Of course, you can't eat too much that day, otherwise you will feel uncomfortable.