I would not recommend the pajamas for girls. I bought a pair in March eager to get the discount on the doll pjs and the cute ones in a girl size. While the doll pjs are adorable, such is not the case with the girl's. First of all, the material is too thin--you would be able to see any patterned undies one is wearing. Second, the top fits snugly but the pj bottoms are seriously a size larger. I bought a size L for myself and the proportions were just completely off. If you check the reviews at the AG site, I'm not the only one that has complained about these frustrations. I was sadly disappointed because I would have loved to own a version of Rebecca's pajamas! However, I am content with the doll pajamas!
DD10 has the pajamas and loves them. They run a bit large (on her) but she's since grown into them. They are perfect for summer. She gets overheated easily and prefers light pajamas and the set is one of her favorites. We didn't notice them being too thin (see through?).
The only issue we've had is that they started to "pill" but she doesn't mind and we've gotten a lot of use from them. I think we bought the set in the summer of 2009.