Don't buy the size you usually buy in them. They are at least 1-2 sizes smaller than usual. Spend a few bucks more and buy branded clothes in a standard size that fits you or your child.
Rainbow Toddler Princess Sleeveless Sundress Girls' Clothing and Dresses
57 Review
Castle Fairy Pageant Wedding Communion Girls' Clothing for Dresses
53 Review
UNACOO 2 Pack Sleeveless Cotton Dresses Girls' Clothing
62 Review
Castle Fairy Communion Pageant Bridesmaid Girls' Clothing for Dresses
54 Review