Sisley from United Colors of Benetton
Size 42 but I’d say fits 4-6 (please see measurements) however it is a stretchy kind of soft silky legging-ish material so it could accommodate larger sizes/ busts

Color is a platinum gray, light gray, dove gray something like that
4 button blazer
I love the material please see tag pictured
It’s soft slinky and is form fitting but comfortable
No stains or rips , I always had this dry cleaned