When (or where) did women start shaving their armpits? And did it have a function besides fashion/beauty?

by SkipDutch

And as a side question, how did it became so popular in modern times?

sleepyrivertroll

There's a whole slew of cool information about this topic here. That's from the Popular Questions section of the wiki and there's tonnes of information about all sorts of topics.

I hope this helps.