Congratulations, Daniela Ruah! It's a...girl!

The NCIS: Los Angeles will grow by two this fall as Daniela Ruah (Kensi) and Eric Christian Olsen's (Deeks) wife Sarah Wright welcome two new baby girls to the world. The pair became first-time parents together two years ago, and the sister-in-laws dropped by Entertainment Tonight to dish on Motherhood: The Sequel.

"I think the person who has the most challenge from all of this Eric," Wright joked. "He goes to work and he has to be with [Ruah] and he comes home and he's with me!"

While Ruah plays Olsen's onscreen love interest and partner, she is married to the actor's brother in real life. When Wright and Olsen gave birth to a little boy back in 2013, Ruah and David Olsen welcomed a son of their own that very winter (you can see both the tots in the photo below). Now, both sets of parents will have the joy of raising baby girls at the same time.

"I've just always wanted one of each," Ruah said. "I have a really great relationship with my mom, and she said to me, 'I would be happy no matter what you had, but as a mom I'm happy you get to have the experience of having a girl."

There's currently no word as to weather or not NCIS: LA will write the actress' pregnancy into the show. Considering Ruah will be nearing her third trimester as filming resumes this summer, it sounds as if the series' may have missed the boat if they were hoping to organically integrate the star's baby bump into the storyline. The drama did a phenomenal job of both hiding Ruah's pregnancy and covering her maternity leave in season 5, and we have no doubt the writers will repeat that feat once more.

"I sort of gave them the news as we finished the season because it really is difficult to plan around something like this," Ruah explained. "They all just had a smile on their faces, [saying], "we got this. Don't worry about it.'"

Catch Ruah back on screen this fall when NCIS: LA returns to CBS on Oct. 2 at 8 p.m. ET.

Tags: NCIS: LA NCIS: Los Angeles celebrity baby