Rumer Willis is guest starring as a pregnant teen on ABC Family's "The Secret Life of the American Teenager," and ET is exclusively with her on the set for the dish about the role -- and whether she'd one day consider posing pregnant in the nude like her mother Demi Moore did!

Rumer, who just turned 21 last Sunday, tells ET that playing a mom-to-be on "The Secret Life" gave her a possible glimpse into her own future.

"It definitely gives you a little bit of foreshadowing of what will come one day in your life," she says. "I can't imagine being very comfortable for nine months of being like this!"

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Ceudy Gutierrez reads a book to her 2-year-old son, Matias, at their home in Buford, GA, on Tuesday, Nov. 18, 2025. Ceudy Gutierrez is struggling to make ends meet for herself and her three young kids following her husband’s ICE arrest earlier this fall. (Miguel Martinez/ AJC)

Credit: Miguel Martinez-Jimenez