Shown as Ella Dress (エラ・ドレス) in the Knit Wardrobe book.

You will need the following amounts of each yarn:
100 gram of Tvinni (510 metres)
50 gram of Kid Mohair (500 metres)

or 100 (S), 150 (M, L) g Isager Alpaca 1 and
150 (S), 200 (M, L) g Isager Spinni

Pattern also includes instructions for making a dress.
The kit can be purchased from any of the vendors listed at the Amimono website: