Kristen Anderson-Lopez ( born March 21 , 1972 ) is an American songwriter . She is best known for co-writing the songs for the 2013 animated film '' Frozen '' with her husband Robert Lopez . Anderson-Lopez won the Academy Award for Best Original Song for " Let It Go " from '' Frozen '' and " Remember Me " from '' Coco '' ( 2017 ) at the 86th Academy Awards and 90th Academy Awards . She also won two Grammy Awards at the 57th Annual Grammy Awards
86th Academy Awards
86th Academy Awards
Kristen Anderson-Lopez