Story 88: Brownies Girl Guides scouts overall

I read in a 1930s British book about Brownies overall (missing the s at the end). I understand that Brownies are 7-8 yo girls of the Girl Guides, a scout-like organization. Not sure what overall means here.

I did some research but couldn't find any real overalls. No pics and no text. Nearly always they talk about uniforms. There are different uniforms throughout the years and different ones for older girls. There are also different types of funny hats.

Young girls these days mainly wore short slipover dresses. I also have seen some with straps looking like skirtalls (1970s, maybe also earlier). Older girls and women often wore longer clothes, looking like coats or maybe even coveralls, colored in dark blue. Modern uniforms are different. Often 2 pieces or just a vest.

Later I read that during WWII the Brownies uniforms were often selfmade sometimes from curtains or overalls. And also that Brownies used to wear overalls for camp.

Quite interesting subject and you also find vintage boy scouts and other pics during research.

Does anybody know more about scouts and overalls?