I've had this picture a few days and have been trying to get information on who's in it and where they were going. I found out yesterday from Bettye Jenkins that these Natchez belles were on a train on their way to the 1951 film premiere of Showboat, which was filmed in Natchez. Please see the caption under the photo for identities. If I've mistakenly identified anyone, please feel free to let me know.
So far, here's what I have: