This is a really pretty vintage 100% Linen sleeveless shirt by quality label ESCADA SPORT possibly from the 1990s.  The pastel floral print is in beautiful ice cream shades of palest pink, cream, green and blue on a white background.  The shirt is a relaxed fit and has an open neck, fastens with five named buttons down the front and has a curved hem.  This is marked a size 40 which I think is approx a size 12 - it is a comfortable fit on my size 12 mannequin - measurements are as follows :  Pit to Pit 47cm (18.5") approx / Shoulder to Shoulder 33cm (13") approx / Length - nape to hem 60cm (23.5") approx.  Please note that this is a true vintage garment and has been worn but is in very good condition and is a very pretty quality shirt.