It’s a girl!

Grey’s Anatomy star Camilla Luddington took to Instagram to reveal her baby's gender! The pregnant actress — who is also known as the voice for protagonist Lara Croft in the Tomb Raider video game franchise — announced the exciting news by posing with an adorable onesie.

MORE: 'Grey's Anatomy' Teaser Trailers: See All the Previews Before the Season 13 Premiere

“I am so excited to announce today that I am having a… girl!” the 33-year-old wrote in the caption on Instagram. “I want her to grow up knowing how strong women are. To be a little warrior who is not afraid to use her voice and stand up for what she believes is right. To navigate through life with courage and kindness, and to be one of the girls who says ‘you CAN sit with us.’”

In the photo, Camilla held up a tiny onesie with a design of the axe that Lara Croft carries in the Tomb Raider video game, with the words “Tomb Raider in training” underneath — a gift from the video game’s developer.

Camilla’s pal and Grey’s Anatomy co-star Ellen Pompeo was also excited for her reveal — maybe a little bit too excited. Camilla posted a skit between her and the 47-year-old actress, who pretended to serve as the creative director for Camilla’s pregnancy photo shoot where they spoofed Beyoncé’s record-breaking Instagram post. In the funny skit, they recreated Bey’s gorgeous pregnancy announcement, which was a photo of her kneeling in front of a wall of flowers, wearing nothing but a bra, underwear and a long, flowing veil.

MORE: Jerrika Hinton Is Leaving 'Grey's Anatomy' After Season 13

This marks Camilla’s first child with her boyfriend, actor Matthew Alan. She debuted her baby bump at the 2017 People’s Choice Awards red carpet last month, and she gushed about becoming a first time mother during an interview with E! News.

"I hear stories from mall the moms on set, so to have that experience myself, and all the joys and the highs and the lows, I'm excited for all of it,” Camilla said.