Supergirl
Episode 3.8 “Crisis on Earth-X, Part 1”
Directed by Larry Teng
Written by Jessica Queller & Robert L. Rovner
Created by Greg Berlanti, Andrew Kreisberg, Ali Adler
Starring Melissa Benoist, Chyler Leigh, Mehcad Brooks, Grant Gustin, Candice Patton, Caity Lotz, Stephen Amell, Emily Bett Rickards, Carlos Valdes, Danielle Panabaker, Dominic Purcell, Tom Cavanagh, Franz Drameh, Victor Garber
The CW
Air date: Monday, November 27th, 2017, 8:00pm ET

It is time for a wedding! Barry and Iris (Grant Gustin, Candice Patton) are finally getting hitched. As exciting as that is, fans of The CW’s Super Friends are more excited about the most wonderful time of the year – crossover time! Although this is more Flash-themed, the fun began last night on Supergirl. They quickly shed any Supergirl plot, to focus in the reason everyone came together – the West-Allen nuptials.

Spoilers below.