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15. Drew Barrymore and Will Kopelman
Santa Clarita Diet star Drew Barrymore managed to carry and deliver daughter Olive in '12 while the world was none the wiser. She attempted to do the same when bringing second daughter Frankie into the world in 2014, eventually deciding to come clean, stating that "Last time I never commented on it and people just stalked me the entire time."

Barrymore and husband Will Kopelman split in 2016.