Most Of Us Didn't Noticed This

All the Official Disney princesses are either born or married into the royalty. Cinderella, Belle, and Tiana are married into the royalty while the remaining Disney princesses were born in the royal families. The three Disney Princess Cinderella, Belle, and Tiana are always seen wearing opera gloves. Princesses who are princess by birth like Snow White, Rapunzel, Merida, and Ariel etc don't wear such gloves, and show their hands and wrists. 

Have you ever observed that? 

Note: Elsa(from Frozen) is NOT an Official Disney princess even though she is a princess of Arendelle in Frozen, Disney only has 11 Official princesses on their official site and all their promotions.