G.L.
I have no idea what "the big thing " is for girls this age, even though I live with one. Here are a few other ideas, though...
Find out from their parents what they're reading these days. Books are great presents. So are book store gift cards. If they enjoy art or crafts, supplies are a great gift, because they will always need more of them. My 9 y.o. is learning to cook, so she'll be getting a cute apron, some kitchen tools of her own, and a kid-friendly cookbook this year. Rachel Ray has a great kid cookbook.