I'll ask it here because we 50+ people are kinder than some others.
I've never worn bibs, only shorts. I see bibs advertised in Nashbar, Performance, etc. and they always picture little white undershirts under the bibs. Do those come with the bibs when you buy them? If not, where do you get them? I don't remember ever seeing little white undershirts advertised in the catalogs.
Inquiring minds want to know.