Getting Ready for Disney

We've been to Disney over a dozen times.  This visit seems brand new.  We will be taking Peyton for the 1st time.  She will be celebrating her 2nd Birthday with Mickey.   We have been busy deciding what days for each park & making reservations.    We've got Chef Mickey & Epcot Breakfast with the Princesses planned.  We've also got Dessert for Wishes at Magic Kingdom.  Who knows how much time we will spend in the parks... this is Peyton's week. 

I am busy trying to get together Peyton's outfits.  For the day we want something cool but Mickey / Disney design and Princess attire in the evening.   It will be June, so we need to make sure the dresses in the evening are not too hot.    The little dress is an idea of what we are thinking for the day...  cool and comfy.   I really need a cute pattern for a Princess dress that is not too frilly...  Any ideas?