Until 1947, there was no standardized uniform for women, and they could design or choose whatever they wanted to wear. When a uniform was finally introduced, it included a calf-length skirt and a jaunty hat.
The NPS redesigned the women's uniform in the '60s, modeling it after flight attendants' uniforms, but it was not popular. As one female park ranger said at the time, "We climb hills and mountains and rocks. It's rugged...We need something more functional. Loose slacks are fine and Levi's are great." Even the hat was a point of contention! Apparently, everyone thought it was "unattractive, dated, and a threat to their hairdos."
By the 1970s, things were even worse — women now had seven options to pick from, but many called them the "McDonald's" uniform. Thankfully, this rock bottom moment led to the NPS to authorize women to wear the exact same uniforms as men in 1978.