This is an atlas or shahi/shohi Ikat chapan of soft and shiney silk warp and silk weft.  Beautifully and precisely hand stitched and lightly padded.  Tajik, Ferghana Valley. Last quarter of 19th century. The trim seen here is a common trait in many ikats and suzanis in last quarter of 19th century. The stitching looks like its from the early Singer sewing machines. This material was handwoven into the 1920s. Bukhara and the Ferghana Vally were the centers if Shohi ikate production.

It is very wearable and in perfect condition. Some of the stitching round the top has pulled a little (see photo), but it is all there. There two colours of purple with a very light pink. 
The lushious Russian red floral interior cotton lining is in good order and condition. Red was an extremely popular colour. The whole hangs nicely. Sleeves were always a little long. It is a feature of this type of garment. No holes or stains. 
A similar ikat design is illustrated on p 57 in Susan Meller's Silk and Cotton Textiles from Central Asia pub. Abrams 2013

Would fit UK sizes 10 to 16

Model is 5' 6'' Size 14

19th century purple silk ikat chapan robe Central Asia