Ruby Rose is giving fans a first glimpse of her Batwoman costume.
The picture shows Rose striding forward in a black and red bodysuit with a cape and mask. The bat signal can be seen in the background.
"First look," Rose captioned the post, adding bat and heart emojis. "Crossover event December 9 at 8pm ET."
E! News said Rose's costume was designed by Colleen Atwood. Atwood previously designed the signature costumes for "Arrow," "The Flash" and "Supergirl."
The three-episode crossover will air Dec. 9, 10 and 11 on The CW.
Rose left Twitter in August following backlash to her casting.
"Where on earth did 'Ruby is not a lesbian therefore she can't be Batwoman' come from -- has to be the funniest most ridiculous thing I've ever read. I came out at 12?" she tweeted before her exit.
Rose is known for playing Stella Carlin on "Orange is the New Black," and has appeared in the films "xXx: Return of Xander Cage," "John Wick: Chapter 2" and "The Meg."
She will return in "John Wick 3: Parabellum" in 2019.