Christy Turlington's Sweet Scholar

Christy Turlington and her adorable 6-year-old daughter Grace were spotted sharing a seemingly serious conversation as they headed home from school in New York City on Tuesday (December 1).

Christy and her husband Ed Burns are also parents to 3 1/2-year-old son, Finn.

The gorgeous 40-year-old supermodel is a health and human rights advocate. She is currently completing a master's degree in Public Health at Columbia University. Christy also spent the past year traveling to Tanzania, Bangladesh and Guatemala working on a self-financed film on maternal health titled, No Woman, No Cry.