Let me introduce a knitting pattern for a cozy onesie designed to fit dolls the size of a newborn baby, with the following measurements:

Height: 43 cm
Chest circumference: 28 cm
Thigh circumference: 17 cm
Calf circumference: 13 cm
Arm circumference: 11 cm
Head circumference: 33 cm
The onesie is knitted as one seamless piece without any sewing. Additionally, the pattern includes instructions for a matching hat for the doll. The project uses acrylic yarn and 3 mm knitting needles (US size 2.5).