Hilary Duff, Kristin Cavallari, Adele and more stars who were under 30 when they welcomed their first child
The younger sister of Jessica Simpson married Fall Out Boy bassist Pete Wentz in April 2008, and announced shortly after she was expecting her first child. Simpson gave birth to their son Bronx Mowgli in November 2008 at the age of 24. The couple divorced in November 2011.
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