Matching Knitted Sweater and Cardigan of the 1930s

Puzzle 17 of Fashion Throughout History Hard Pack

Question is: Matching Knitted Sweater and Cardigan of the 1930s

and the answer is: TWINSET

Word Meaning:

TWINSET — A combination of a cardigan and a jumper, usually knitted in wool or cashmere.

Definitions from Wiktionary.