Well I hope someone posts something more informed than me, but my immediate thoughts were late 1850s or 1860s
America.
Tintypes was invented in 1853 and introduced to the Us in 1856, so thats a sort of cut off point in terms of earlyness.
Just before the civil war (1861-65) there was a widespread fashion craze for zouave type costumes in the USA. This was then reflected in the civil war with many zouave units with fancy dress type uniforms forming up on both sides. I kid you not!
It strikes me this could well be something influenced from around then.
Have you considered the possibility that this could be a male?
Neil