Diane Keaton, 71, Is the Most Underrated Celebrity on Instagram(02)

Diane Keaton, 71, Is the Most Underrated Celebrity on Instagram(02)

Image Gallery: Is This Diane Keaton's Most Underrated Performance? Fans Are Divided!

Diane Keaton, 71, Is the Most Underrated Celebrity on Instagram Diane Keaton, 71, Is the Most Underrated Celebrity on Instagram Diane Keaton, 71, Is the Most Underrated Celebrity on Instagram Diane Keaton, 71, Is the Most Underrated Celebrity on Instagram Diane Keaton, 71, Is the Most Underrated Celebrity on Instagram Diane Keaton's Style Through The Years [PHOTOS]