Dress: Tresor Gown by Monique Lhuillier - Fall 2017 Collection
(played by ) on Supergirl on The CW was spotted wearing this wedding dress on Supergirl/The Flash on episode 'Crisis on Earth-X (1)' (3x08) in Nov 2017. 's Dress is the Tresor Gown by Monique Lhuillier - Fall 2017 Collection.