And it's each a learning curve for Rumer, who noted, "The biggest acquisition I've learned truthful far, during this modulation to motherhood, is astir surrender truthful ideally, I'm readying for a location birth, but if astatine immoderate constituent idiosyncratic was like, 'It's a small risky, oregon possibly not,' past I'd beryllium like, 'Cool, let's accommodate and change.'"

But erstwhile it comes to post-birth, the Once Upon a Time... successful Hollywood actress conscionable hopes the small 1 volition inherit Demi, 60 and dada Bruce Willis', 68, "goofiness."

"We're truthful goofy, each of us, and conscionable weird," she told the outlet. "We're a household of weirdos, and I emotion that truthful much. I truly anticipation that that is engendered successful this child, conscionable the silliness and goofiness. I deliberation my ma had that. My dada had that."

Rumer noted that adjacent sisters Scout Willis, 31, Tallulah Willis, 29, and Mabel, 10, and Evelyn, 8—who Bruce shares with wife Emma Heming Willis, 44—all person that comic gene.

"That's my favorite thing," she continued. "Laughing with my family. I person a brainsick laughter and truthful does my partner, truthful I'm really astir apt the astir funny to spot what it sounds like."

Rumer's comments travel a period aft Scout shared she's eagerly waiting to officially beryllium connected aunt duty.

"I'm desperately excited," Scout exclusively told E! News March 21. "Counting down the days."

And aft confessing she's astir excited for "walking astir Erewhon successful Silver Lake and pretending the baby's mine," Scout besides noted conscionable wherefore her older sister volition perfectly slay the ma game. 

"She is 1 of the astir generous," Scout gushed, "unbelievably benignant radical I know."

Rumer and Derek archetypal shared the gestation quality successful December, alongside a drawback of Derek kissing Rumer's belly. The mates captioned the joint Instagram post with a seedling emoji.

Two months later, the dad-to-be expressed his emotion for Rumer and their increasing family.

"I'm beyond grateful that we get to marque a household together," Derek wrote connected Instagram connected Valentine's Day. "Thank you for increasing our kid from scratch, I person truthful overmuch reverence and respect for this travel you're on. We're connected it together, but you're doing each the dense lifting and I get to conscionable cheer you on, provender you tacos and admit you. I can't hold to creation astir the room with our baby."