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1. Gwen Stefani
Gwen Stefani welcomed her third son, Apollo, with her then-husband musician Gavin Rossdale when she was 44 years old. She revealed to Marie Claire in 2012 that before she became pregnant with Apollo, she and Rossdale were struggling to conceive again.

"I really, really, really wanted one about two years ago, and it didn't really work out. So...I feel good with what we've got. Everything works out how it should. You can't plan anything, right? You can try." And two years later she gave birth!