Katherine Schwarzenegger and Chris Pratt are expecting their third baby

Katherine Schwarzenegger and husband Chris Pratt are expecting their third baby.

The author is pregnant again, a source confirmed to People.

Katherine, 33, and Chris, 44, already have daughters together, Lyla Maria, 2, and Eloise Christina, 13 months. Chris is also father to Jack, 10, with ex-wife Anna Faris.

After the news was confirmed, Katherine posted a photo on Instagram of herself helping her daughters ride horses. “Things that make me happy,” she captioned the photo. “A cloudy morning followed by a visit to the stables.” She did not show her belly, but turned her back to the camera.

Katherine has previously spoken about how important it is for mothers of young children to ask for help when they need it.

“I’m a huge believer in this – I feel like we see all these moms on Instagram saying, ‘I do everything, I do everything, I do everything by myself,’ blah blah, and I’m like, ‘I don’t want to do everything by myself,'” she said last year at the Best Foot Forward panel luncheon in honor of Women’s History Month.

“I want to lean on my sister, I want to lean on my mother, I want to lean on my friends, my girlfriends. I want to be honest and transparent and also say, ‘I can’t do this today. My child is sick. She was up all night teething. I have to be a mother now.'”

She added: “I think you should be able to be open about the fact that you don’t have to do everything… I think especially when you’re juggling multiple roles, it’s about saying, ‘I need help today,’ and that’s okay.”