Vintage handmade 3 piece sweater matching mitts & booties, 3- 6months ??

Vintage handmade 3 piece sweater with matching mitts and booties, 3- 6months ?? I am guessing at the size. We don’t have kids so hard for me to tell the size. Beautifully knitted sweater, cream in color Pit to pit is 9inches Length is 10inches It comes with matching handmade mittens and Has been kept in a cedar chest since 1970 Note: there is slight yellowing on the booties from age, also 1 bootie is missing a string