Make this matching hat and sweater set in Bernat Softee Baby for babies from 6 months to 2 years. (Yarnspirations)

To fit chest measurement
6 mos 17” 43 cm
12 mos 18” 45.5 cm
18 mos 19” 48.5 cm
24 mos 20” 51 cm

Finished chest
6 mos 20” 51 cm
12 mos 21” 53 cm
18 mos 22” 56 cm
24 mos 23” 58.5 cm