Stars' Summer Bumps

Hot moms-to-be – Kendra! Nicole! Sarah Michelle! – are proudly showing off their baby bellies as the mercury rises

ADRIANA LIMA

The expectant supermodel cradles her growing tummy at a party celebrating the 40th anniversary of the lunar landing Monday at New York City's American Museum of Natural History on July 13. "We are so excited!" the supermodel tells PEOPLE about expecting her first child this December with her NBA star husband Marko Jaric.