Wore this dress for a few days, and now it’s become tight/doesn’t fit well…🥲

Product Details:
Sleeve - Short Sleeve
Fabric - Cottan I think
Neck Type - Round Neck
Pattern - Multi striped
Size - S & XS

Showed in pictures:
There is a stain and smalll hole too but it’s not very visible…
Its look cute when u wear it…
I think If you wash it, the stains will come out or be removed…
Added the picture how it looks after wearing…
IDK 🤷‍♀️