Photo: Kimberly Van Der Beek & Peggy Rometo

Exclusive: Rumer Willis on Peggy Rometo and Kimberly Van Der Beek’s podcast Bathroom Chronicles

Rumer Willishas always envisioned motherhood in her future.

“It’s like one of those weird things that I know sometimes people have such clarity about, like ‘Oh, I want to be a musician, I want this,’ and it was never a question for me that I wanted to be a mom,” she says. “And that just felt like such a divine purpose and something that when I started thinking about it, felt like such joy.”

Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.

Rumer Willis Instagram

Rumer Willis and Derek Richard

“I was talking to my partner the other day and saying, ‘You know, when I go to the farmers market, I call it church because I leave and I feel so excited,’ " she says. “And the idea of being able to bring my kids in like a little cart or something brings me so much delight, I can’t even … I can’t wait.”

Willis also sheds light on her pregnancy and how she’s learned to protect her boundaries.

“It’s made me upgrade so fast, like things where I used to have such a nature to be people pleasing or to not stand up for myself for little things that then would kind of get under my skin,” she says. “I would say literally, maybe even a week after I got pregnant, all of a sudden, it was like, no, no, that’s not going to work for me anymore.”

“This is what I need to do to reorient this and speak up for myself. It was like a new equation and a new puzzle all of a sudden downloaded,” she explains. “And I had a different operating system.”

PHOTO: Kimberly Van Der Beek & Peggy RometoPHOTO: Kimberly Van Der Beek & Peggy Rometo

Exclusive: Rumer Willis on Peggy Rometo and Kimberly Van Der Beek’s podcast Bathroom Chronicles

Exclusive: Rumer Willis on Peggy Rometo and Kimberly Van Der Beek’s podcast Bathroom Chronicles

In the first snap, the father-to-be wrapped his hand around her belly and gave it a sweet kiss while Willis smiled. She also showed off her pregnant silhouette as she stood near a window in another image. A photo that featured a very excited Thomas rounded out the set of pictures.

Willis' mom,Demi Moore, shared their announcement post on her own Instagram, already playing therole of proud grandmother.

“Entering my hot kooky unhinged grandma era,” Moore wrote alongside the couple’s photos.

Emma Heming Willis— who is married to Rumer’s fatherBruce Willisand mom to little sistersEvelyn, 8, andMabel, 10 — also shared her excitement for the mom-to-be.

source: people.com