All schools here (South Africa) have uniforms (ok, there might be very few exceptions). Our girls' schools is not uptight, though, and most Fridays are "civvies" days where they pay R5 (ahem, 0.25 pounds) to wear non-uniform, but still some girls opt for the uniform.

The wealth gaps here are ghastly and uniforms help bridge that. The children compete on so many metrics, why add clothes to that?

re "real butterfly": A couple of years ago (my girls aged 4 and 6? 5 and 7? not sure), the elder wanted to be a veterinarian, the younger "a flying horse". Sounds good to me! (Currently vet and pop star, I think. I preferred flying horse)