From Vogue Knitting Designer Knits:

This versatile openwork pullover trailed with vines of ribbed leaves and eyelets is worked in crisp white cotton for a refreshing spring to summer look. The sporty yet feminine pullover is loose-fitting with angled armholes and crew neck.

The Sesia Baby yarn is a substitution recommended in the book because Colle is discontinued. The Colle yarn was a crisp, mercerized cotton yarn that felt a lot like knitting with crochet cotton.