Caity Lotz, who plays White Canary on the TV show “Arrow”, has shared a photo of herself with Melissa Benoist as Supergirl.

The two will no doubt share screen time during the upcoming 4-way crossover between “Supergirl”, “Arrow”, “The Flash” and “DC’s Legends of Tomorrow”, which we now know will involve an invasion by the alien race known as the Dominators.

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