This dress is very stretchy -

The Lilly Pulitzer UPF 50+ Nadine Sink or Swim Blue And Pink Chilly Lilly Dress in XXS is a stylish and comfortable dress perfect for summer and spring occasions. With a vibrant multicolor floral pattern, 3/4 sleeves, and a knee-length A-line shift style, this dress or swimsuit cover up is both practical and fashionable. Made in the United States, it offers UPF 50+ protection, making it ideal for outdoor activities and travel. Its casual yet chic design is sure to make a statement whether by the pool or out on the town.