Since there was no photography two thousand years ago and the New Testament didn't have illustrations, it's safe to say any idea about Jesus' hairstyle would only be a guess. The images we see in paintings were produced thousands of years later. Leonardo Da Vinci's "Last Supper" was completed in 1498 based on his vision of descriptions written in the four gospels describing that event.
Answered May 05, 2011
Edited May 05, 2011