I don't think that BBB has Alice dresses, but you can get them in the parks. But I think they were limited there too. I know of 2 places I have seen them, the UK in Epcot and WOD. They might be at other stores, but I don't remember seeing them. I got mine on ebay, and it's the official park dress.
Word of warning, I felt it ran small, and not sure if it was just my dress or not, but the head hole had no give. We really struggled to get it over her head. I had heard 2 others say that too. It's so tight infact that if she is ever to wear it again, I am going to have to have my friend cut it and put some kind of loop button on it. But my DD has grown in heighth so much over the past year, that it might be too short anyways. LOL!
Another word of warning about the Alice dress is that if it gets wet, it bleeds really badly. My DD wore hers on Kali and she was drenched. She wore white bike shorts under the dress and I had to throw those away, since they turned splotchy blue. The apron got really splothcy blue too. I rinsed it out at the resort trying to save it, and it bled more, so I just applied stain stick and hung it to dry for the rest of the trip. When we got home I washed it with oxy and most of the blue came out of the apron, but if you were too look you can still see it's not perfect anymore.
It's a great dress for comfort though. And nopt as popular, so you don't see as many girls wearing it, so alot of CM's tend to comment on it more.