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SANTA MONICA, CA - SEPTEMBER 27: Actress Sarah Michelle Gellar (L) and her son Rocky James Prinze attend the Mattel Party On The Pier at Santa Monica Pier on September 27, 2015 in Santa Monica, California. (Photo by Mike Windle/Getty Images for Mattel UCLA Children's Hospital)

SANTA MONICA, CA - SEPTEMBER 27:  Actress Sarah Michelle Gellar (L) and her son Rocky James Prinze attend the Mattel Party On The Pier at Santa Monica Pier on September 27, 2015 in Santa Monica, California.  (Photo by Mike Windle/Getty Images for Mattel UCLA Children's Hospital)