By Kate Stanhope,
"Mother and baby are doing great," her rep tells the magazine. "And Charlotte is VERY excited to be a big sister." A name for the new addition has not yet been released.
Gellar, 35, and Prinze, 36, first met on the set of the 1997 thriller I Know What You Did Last Summer and have been married for 10 years. The couple welcomed daughter Charlotte in September 2009.
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