From the Knit Picks Website:

This little jumper is a joy to create. It has no seams, is knit all in one piece from the bottom up, and is basically all knit and purl except for one row out of four. Single crochet around the armholes, neckline and skirt give the jumper a finishing touch.

Optional, but highly recommended, are the crocheted flowers on the jumper and the beanie.

What a fantastic gift this would make for a precious little girl!

See also:
Chevron Stitch Beanie