Pattern is made for Corolle mini 8” doll. Once you have knit the basic dress you then will see how easy it is to change its appearance just by adding a ruffle on the bottom, or crochet edging on sleeves and bottom, maybe feature a lovely yarn and use the basic pattern, you can add color work, try different lengths. After you make one you will want to make more. It takes a small amount of fingering weight yarn. This would be a wonderful way to use up your scraps.
Ravelry: Little Kina pattern by Muriela - free pattern for doll sweater. Very cute, and it fit, but it seemed a bit small for the AG Bitty Baby. The larger size might be better if you don't want your little girl to need help to dress the doll.