Hi Kristen! You're going to have so much fun with your little princess at Walt Disney World!
The Bibbidi Bobbidi Boutique has a minimum age requirement of 3 years, so unfortunately, your daughter will have to wait a few years for her princess makeover. However, if she enjoys getting her hair styled, you could take her to the Harmony Barber Shop in the Magic Kingdom. My daughter had her first haircut there, and it was really a magical experience! In addition to haircuts, the Barber Shop also styles hair -- when my daughter was about the same age as yours, the barber gave her a cute hairstyle with braids and lots of sparkly pixie dust!
I think you'll be surprised at how many attractions your daughter will be able to experience! Click
here for a list of all the rides with height requirements. If it's not on the list, your daughter can ride it! The Magic Kingdom has lots of fun rides for the little ones, including It's a Small World, Dumbo The Flying Elephant, and The Many Adventures of Winnie the Pooh, to name only a few! On the few attractions that she isn't big enough to experience, you and the other members of your party can take advantage of the Rider Switch policy so you all can ride without having to wait in line twice.
When my kids were that age, one of the things they enjoyed most was playing in the jumping fountains at Epcot -- I think we spent hours at the one near Test Track! Just be sure to bring your daughter's swimsuit or a change of clothes, because she will get soaked!
If you have any more questions, feel free to ask! Wishing you a magical trip with your daughter!