Award-winning actress and singer Hilary Duff helped Santa pull the switch to light the world’s largest LEGO® Christmas tree at LEGOLAND® California Resort during the 15th annual tree lighting ceremony in Carlsbad, California. Duff, popularly known as a star on the critically-acclaimed and buzzy TV Land series “Younger,” spent the day enjoying all the attractions at LEGOLAND with her son and family before heading to the giant LEGO® Christmas tree for the evening’s festivities.