Vintage, authentic Louis Vuitton wool sweater from 2005/06, when Marc Jacobs was at the helm, and in one of his signature colors - a dusty pastel pink/purple.  High neckline, long sleeves - fitted dolman - with a satin peplum around the hemline and silver domed buttons that go halfway up the back.  The color is hard to photograph - it is in between a pastel pink and pasted purple, but dusty/greyed. You can see in the photos where it pulls more pink on a green background.  It is not a bright shade, very muted.

Material:  Wool, with possibly a touch of cashmere, but predominantly wool (tag removed long ago). Satin hemline is an acetate/viscose blend

Size:  Marked size Large, but definitely runs small.  Should work for S/M but go by the measurements, please.
Bust: 17" across
Sleeve:  23.5"
Length: 24"

Condition:  This is in really great shape for a 20 year old sweater.  The only flaw is a tiny approximately 1/4 inch separation under the left arm at the seam. It can easily be mended and will not show.  Otherwise, this sweater has light overall wear normal of vintage, without excessive pilling or issues.  It's truly beautiful.