Sirdar knitted cardigan and vest pattern, 6 months - would knit in DK years:
Ravelry: Diamondback Cardigan Sweater Vest pattern by Lisa K.
This suave and sophisticated sweater vest gives an intelligent air to the child who wears it. The solid color highlights the intricacies of the diamond cable panels on the front and the cabled argyle panel in the back.
Ravelry: Bullseye pattern by Terri Kruse