Well correction, I have drawn it, I just don't post it because I hate how it looks.
but I'm starting to fear that this is just what people think she dresses like in public to hang around random cartoon characters, and that's just not true.
I haven't drawn Bivian in her casual outfit in a million years, and the two main reasons why are because I've been having trouble coming up with a better design for it, but also because 99% of the scenes I imagine Bivian in involve her just being at home and navigating her complicated emotions.