NWT Hello Molly Yellow Midi Dress - Size Small (S)

Bought and tried on for a wedding but then never wore - includes original tags. Comfortable dress, lightweight material, slight stretch in the chest area (at the top), but waist and bodice is fitted w/o stretch. Tags say “All About May” and shows the size as a 4, but this was purchased from Hello Molly’s website and they listed it as a small. I would say it runs true to size or slightly small. Link to website: https://www.hellomolly.com/products/field-of-sunflowers-midi-dress-yellow?country=us Details from Website: Length from shoulder to hem of size S: 110cm. Midi dress. Lined. Model is a standard XS and is wearing size XS. True to size. Inner grip. Strapless. Flowy skirt. Non-stretch. Zipper. Cold hand wash only. Cotton/Rayon.