Actress Julia Roberts flashed her tremendous megawatt smile at a star-studded Big Apple bash benefiting the late Paul Newman's Hole in the Wall children's charity, and "Extra" has the raw video!

The cause is a longtime favorite of Julia's -- the pretty woman began working with the charity 13 years ago -- and she's dedicated to keeping Newman's dream going.

The event was hosted by Joanne Woodward (Newman's wife of 50 years), and featured performances by Harry Connick Jr. and James Taylor. Watch Harry Connick's raw interview here.

Since its founding in 1988, Hole in the Wall camps have opened in 50 states, allowing more than 164,000 kids with cancer and serious blood diseases to be carefree kids again. Learn more about the Hole in the Wall gang here.