Houppelandes were the height of the early to mid 15th Century.  They used a large amount of fabric and were very full, pulled in by a high belt, worn just under the bust.  The sleeves ranged from loose sleeves, to open sleeves that trailed on the floor, often with a dagged edge.

This houppelande, in a rich dark red brocade, is based on the blue gowns seen in the French Book of the Queen, from 1410-1412, by Christine de Pisan  The sleeves are lined with an ivory linen, with a crenellated dagged edge, and reach just past the knees.  The collar lays out created a v at the neck opening.  The gown will fit  a size 20 or smaller.  Modeled by a size 16 model.

This gown does not come with a belt, but if you are looking for reproduction pieces, you can find  Belt Ends and  Belt Mounts and more at  Armour and Castings. (opens new tab)  Another good option is  Raymond's Quiet Press.