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Maria Shriver

Maria Shriver's son Patrick: 9 pounds, 8 ounces
The Catholic Kennedy clan that Maria Shriver hails from is known for having huge families. President John F. Kennedy and his brother Robert F. Kennedy were two of nine children, and RFK went on to have 11 children with his wife Ethel! So child-bearing was in the genes, but that probably didn't make things any easier when the former First Lady of California gave birth to her third child and first son with her husband Arnold Schwarzenegger in 1993: Patrick was a more-than-healthy 9 pounds, 8 ounces. Now 18, he made headlines in mid-March when he was hospitalized for a minor ski accident that required stitches.

Biggest Celebrity Babies

Jessica Simpson's nearly 10-pound daughter Maxwell may seem large, but there have been other famous offspring before her who also tipped the scales.