Please see measurements. The tag does say 12, and French 12 translates to about US 8, but this is NOT a Sz 8 dress. I am a US Sz 4, this dress fit me nicely.

The Etam pinafore style maxi dress in blue and white stripes with contrast trim is a crisp and stylish addition to any wardrobe. This designer dress features a sleeveless design and a long length, perfect for a bohemian or classic look. With its vintage appeal and machine washable care instructions, this XS/S size dress is easy to wear and care for, making it a versatile and timeless piece for any woman's closet.