I know a lot of people really like the Sherpa bags. My girls were already used to their other carriers, so I haven't tried them out yet, but I've heard good things.
To answer your question, most Juicy carriers are airline approved. Your girl wouldn't fit in the smaller Juicy carriers (kind of bowling bag shaped), but I'll bet she would fit in the longer rectangular ones. We have one of those and my 9 lb girl fits in there comfortably. I attached a picture of the one we have, but it doesn't show it very well. My 11 lb girl does too, but it seems just a little too tight for my preference.
I really like the Petflys carriers for traveling:
Welcome To Pet Fly's - Trendy, Edgy, Airline approved pet carriers for traveling in style, comfort and safety on board a plane, train, automobile or just hanging out with you.
I've also traveled using a Coach carrier (I think they stopped making them), but Rory is a genius and figured out how to unzip the top (a double zip with velcro), which made take-off and landing super fun with her trying to poke her little head out of the top to see what was going on. My advice is to make sure it zips and snaps in place on the side rather than top.
ETA: Found a picture of Lane in the Coach carrier, and you can kind of see how the top closes.