Do you put underwear before clothes on your doll?

Lucifer didn't come with underwear and I haven't gotten him any yet...but I really should, because there's only one snap at the top of his fly keeping his pants on, which means his fly sometimes gapes open when he sits down I guess for now he's staying (marginally) historically accurate by just having a long shirt underneath it, lol.

 

Most of my dolls do wear underwear. All the girls have their own underwear, I would feel weird if they didn't when wearing a dress or a skirt. But, for the boys, they only wear it when they are not wearing skinny pants.
I have read on a previous post that washing doll clothes before using them could prevent staining. I didn't know that. I will wash them from now on!!!

 

I only put briefs/safety shorts on dolls that aren't wearing some form of pants, otherwise they add too much bulk and get caught in the joints. The lack of underwear on a clothed doll doesn't bother me. Doll clothing requires a bit of "cheating" to look like human clothing, especially at smaller scales, as humans are made of squishy tissue and BJDs are made of hard resin.
The one thing that bothers me is when the doll is sculpted in a way where certain features, particularly the chest and groin, are still very obvious with clothing on (looking at you, Dollshe, and the pants-destroying genitalia on the Old Hound body). I do like when dollmakers include a "cup" piece with male bodies so the doll can have a natural-looking silhouette in pants instead of a flat featureless groin or a very obtrusive one (thanks ATS, Bimong and Granado!).

I'm more likely to put socks on a doll to protect it from colour transfer than any other form of underwear, as I've bought a few secondhand dolls who had bits of disintegrated pleather shoes stuck to them, as well as dye transfer.

If I receive a piece of doll clothing with excess dye, I give it a soak before putting it on the doll (the colour transferring to cardboard used to keep the item in place is a warning sign, especially for colours that are known to bleed like black, navy and red).
If any colour does transfer to a doll, most of it can be removed with isopropyl alcohol and a melamine sponge. Worst case is light wet sanding.
One of the main reasons I have no interest in non-resin dolls is because I can't be bothered dealing with how easily colour transfers to vinyl and other plastics.

 

I like to use either long underwear or boxers for my boy who gets the most dressing attention from me, it definitely has its maintenance reasons! But even if it did absolutely nothing, I would still have him wear underwear!