The First Ever Unclothed Scene In Movie History and Full Frontal Nudity In The Movies:

The first motion picture ever made in 1878 was Eadweard Muybridge's ill-famed galloping horse.

Ever since then, rumors are the second picture Muybridge made was of a naked girl and a Shetland pony.

What is known is that he did movie completely naked guys and entirely nude