Ah, how we love to hate fat. Your diet should be the biggest factor in how much fat you put on...keep it pretty clean, and if you still find yourself putting on more fat than muscle, cut back a little or add some mild cardio.
This is where comments like those made by test boy on the other thread weren't real helpful...women who are not "on" store fat a whole lot more easily than men, and a diet of junk food would blow most women up like a balloon. But don't worry--you won't just wake up one day and say, "oh my god, I'm so fat!" Okay, well maybe if you have PMS. But it won't be true. Just monitor yourself. Cellulite won't pop up overnight.