Dress: Two-Tone Wool Gabardine Dress by Narciso Rodriguez (exact color not online)
Diana St. Tropez (played by Tina Fey) on Great News on NBC was spotted wearing this black and blue colorblock dress on Great News on episode 'Honeypot!' (2x03) in Oct 2017. Diana's Dress is the Two-Tone Wool Gabardine Dress by Narciso Rodriguez .