well first, welcome to TFK!!
and im a disney fanatic too!!! xDD good luck finding the perfect little girl!
and i dont know how experienced you are with fish, so just a little tip that i think is really important: when you pick out a fishy, make sure it is respondent, like it moves around well, reacts to you when you look at it/pick it up. just wanted to throw that in there, because i got a female at petco and because she didnt look sick i thought she would be alright. she didnt even last a day
just wanted to make sure you keep that in mind, because it really sucks, especially it it would be your first and only betta (she wasnt my first or only, but it was still really sad)
sorry if that was kind of a downer
lol, and ill just say that i have gotten 11 other bettas from petco and they are all doing very well :) good luck with picking the perfect little girl, and hopefully youll post pics so we can meet her too!