HargitayHalloween.jpgLaw and Order actress Mariska Hargitay happily celebrated her first Halloween with new daughter Amaya Josephine on Saturday night!

The mom-and-daughter pair went to the Light Up A Life benefit, put on by New York Presbyterian/Weill Cornell Phyllis and the David Komansky Center for Children's Health. Hargitay, 47, and her husband, Peter Hermann, are honorary chairpersons.

Mariska and Amaya were a gorgeous witch and an adorable pumpkin! More than 900 children and their families attended.

Hargitay and Hermann adopted Amaya about six months ago, and last week announced more good news: they'd adopted a son! The couple also has 5-year-old son August.

Photo Courtesy of Will Ragozzino /BFAnyc.com