Robert Pattinson: I've Been Working on The Railroad...

Robert Pattinson shares a laugh with a co-star as he begins work on his newest film, Water for Elephants, on Thursday (May 20) in Fillmore, Calif.

The 24-year-old actor filmed scenes on a steam train for his first day of work.

Yesterday, brand new movie posters for Twilight featuring Rob and his co-stars were released – check them out here if you missed them!

10+ pictures inside of Robert Pattinson working on the railroad…