Mike Marsland/WireImage
Jennifer Davis
May 19, 2016 @ 1:00 pm

Fifteen years ago, Julia Roberts and George Clooney became BFFs while filming Oceans Eleven, and they've never looked back. They've starred in several films since then, including this month's Money Monster, and through the years the duo has also embraced each others families.

"She stayed at my house in Italy when she was first pregnant," Clooney tells People. "She brought all those monsters (twins Phinnaeus and Hazel, 11, and Henry, 8) back to the house when they were actual human beings and we’ve had a blast with them."

But would Roberts trust Clooney to babysit? "It would depend on how much time I was gone,” she says jokingly. But even if Clooney isn't up for longterm sitting, their families are as close as ever. "We’ve just stitched our lives together,” she continues. “All these people that come into our lives—my husband, my children, his wife—we just keep stitching our lives closer together.” Sounds like a friendship for the ages.

RELATED: InStyle Cover Girl Julia Roberts Shares 11 of Her All-Time Favorite Things

Catch Roberts and Clooney's new film Money Monster in theaters now.

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