Bridal weight loss and weight management?

I bought my dress one size too small in December (last year) and 2 months later it did not fit at all (was 2 sizes too small)! So I hired a personal trainer in Feb. (wedding was in April) and basically did cardio 5 times a week for at at least an hour and trained with the trainer 3 times a week and lived off basically chicken, green veggies, brown rice, (tuna if you like it, I don't...so I used canned chicken), muscle milk light, low fat cottage cheese, basically high protein, low fat, low carb. And by my fitting 8 weeks later I had lost the 2 dress sizes I needed to.