MELISSA ODABASH 

LOVELY ALL WHITE BEACH STYLE COVER UP HOLIDAY DRESS IN A LIGHT COTTON GAUZE WITH SIDE SLITS - QUITE TRANSLUCENT

UK 12 FOR A SLIM FIT

Probably all cotton, but not labelled 

very very good condition 

long length 117cms, bust 92cms, pit to pit is 101 cms, weighs 130g