There is no size on the label.
Based on the measurements I think it is a size 10.
Photographed on a size 10 mannequin.
Measurements are in the photos.
Please ask if you need more information.
I think the material is a Viscose/Elastane mix.
Hand wash.
The material is stretchy.
No fastening.
Excellent used condition.
No specific signs of wear to comment on.