Thought some of you would find this interesting..
The Baby Snooks show was a radio program that ran from the late 1930's to the late 1940's. It was about a little baby girl who did a bunch of silly stuff. The funny thing was the actress who played her was in her 40's at the time.
There are a ton of photos of Fanny Brice (the actress who played Baby Snooks) in full costume acting like a baby, and the radio program is actually pretty funny. There is several episiodes on Youtube too if you want to go listen to them.
Have a nice day!