I got a parent to buy real diapers for a doll to play with, gender-allowing. It was a cool '70s (?) "baby Alive" and was electric(Made horrid ugly electronic noises as the mouth motor moved the orifice like a sucker fish, which I enjoyed shoving my pinky in to see how it worked...gross), thence my intrigue. I managed to coerce a kid into wearing the Huggies' newborn diapers...or were they size 3? I can't recall, the pack was red or purple.... But they played with me and we did role-play games, amongst other weird scenarios. They didn't have the gel stuff in them yet. Just weak cotton stuff filler.
Boy oh, boy was I weird! (like I'm not?!! Lol) But I had a lot of fun... probably got no sleep with the fun. Barely recall sleeping.