Hey Howdy Hey Norma and welcome to planDisney!
As a GirlDad of 3 princesses myself, I know how Magical it is to see the young princesses get their big magical transformation into their favorite princess. Actually meeting them afterward is something that requires video evidence to record the epic interaction! While an experience to both have their transformation and meet the princesses is not available in one place, let's go over some options to get your granddaughters ready for their big day!
The usual spot for the Magical makeovers has been at the Bibbidi Bobbidi Boutique either in
Magic Kingdom,
The Grand Floridian Spa or at
Disney Springs. Unfortunately at this time, these locations continue to be closed and we all continue to anxiously wait for their reopening. You still do have some options, however.
For their Royal Makeover, you can look into the Four Seasons Resort Orlando at Walt Disney World Resort. They have a full makeover option, "Royal Treatment" or "Belle of the Ball", for princesses in their spa which can be booked online or by calling. This can be as elaborate as you would like with the whole dress selection and make-up for the full treatment. You can also bring the dresses down with you that you can purchase online or at local stores near you and have them "Magically" appear in the room.
Sephora in Disney Springs offers a Feature Focus Service makeover in which your princesses can get their make-up done inspired by the princess of their choosing. You can give them a call as well to schedule a time for this experience.
As far as meeting the princesses, well Disney has a complete
landing page for you to find out which princess you would like to meet as well as where they will be located. Princesses are in all four theme parks, but they all have different places they are available for meet and greets. Make sure you bring your autograph books because princesses are now able to resume signing these and at most locations will be dishing out the hugs the little ones really enjoy.
I hope this information was helpful in planning your trip for your granddaughter's special transition into Royalty and greeting our Royal Princesses as well! Best of luck with your continued planning and I hope you have a Magical vacation full of memories. Let us know if you have any other questions, we would be happy to help.
Have a Magical Day,
Nick