Photo: Stuart Kerr

Prairie Moon Palmer

Teresa Palmer’s new addition has arrived!

TheA Discovery of Witchesstar, 35, welcomed her fourth child with husbandMark Webber, daughter Prairie Moon Palmer, on Aug. 17, she announced on Instagram Thursday. The couple share daughterPoet Lake, 2, and sonsForest Sage, 4, andBodhi Rain, 7. Webber is also dad to sonIsaac, 13, from a previous relationship.

Stuart Kerr

Prairie Moon Palmer

Prairie Moon Palmer

The actor and director, 41, also posted a photo holding Palmer while she was in labor.

“If birthing were a sport, my wife would be a pro,” he wrote on his Instagram Story. “Grateful for a serene home water birth for my new little girl, Prairie Moon.”

Want to get the biggest stories fromPEOPLEevery weekday?Subscribe to our new podcast,PEOPLE Every Day,to get the essential celebrity, entertainment and human interest news stories Monday through Friday.

Prairie Moon Palmer

RELATED GALLERY:Celebrity Babies Born in 2021 (So Far!)

Earlier this year, Palmer debuted the bookThe Zen Mama Guide to Finding Your Rhythm in Pregnancy, Birth, and Beyond, which she co-wrote with friend and fellow actressSarah Wright Olsen, who has three kids. In the text, Palmer opened up about having a miscarriage six years ago.

“We want women to pick up this book and read it and feel so included in the process. If they’re reading this book and they suffer pregnancy loss, they don’t have to put this book away,” she added. “They can continue reading this book. If they’re struggling with infertility, they can continue reading this book. You hear pregnancy loss and you think of one particular thing, but there are so many specific types of loss. We just wanted to dedicate that time to writing about all of it.”

Axelle/Bauer-Griffin/FilmMagic

Teresa Palmer; Mark Webber

The actress has also spoken about herdisordered relationship with foodand how motherhood “liberated” her. Last summer, theWarm Bodiesactressrevealedon theMamamiaMe Before Youpodcastthat she has suffered from the eating disorder orthorexia, which according to theNational Eating Disorder Associationis “an obsession with proper or ‘healthful’ eating.”

Having children “healed” her relationship with food, she explained.

“My body just blossomed and I had this big belly and I could feel life within me, and it was just incredible seeing what my body could do,” she said of pregnancy. “I was getting stretch marks on my boobs and cellulite all over my bum and the backs of my thighs.”

“I was finally liberated from these judgments that I had surrounding my body, which I realized had existed since I was … a teenager,” Palmer said. “Since being a mum, I’ve embraced it all. The lumps and the bumps and the stretch marks. … It’s a map of my journey of bringing my babies into the world.”

If you or someone you know is battling an eating disorder, please contact the National Eating Disorders Association (NEDA) at 1-800-931-2237 or go to NationalEatingDisorders.org.

source: people.com