At age 3, Drew was nowhere near potty trained. Meg had already started down that road and had alternated periods of wanting to wear big girl underpants and wanting her pull-ups back. Drew didn't care. He was happy with pull-ups. We bought both girl and boy gendered pull-ups for the twins, but it turned out they both preferred the girl ones. In particular the princess ones. In particular the princess on with three princesses on it.
The packs came with one princess and three princess designs. They would rifle in the pack to find the three princess ones. In fact Meg was so enamored of them she hid them once. I would be changing their pull-ups and announcing to Drew and Meg that we had run out of three princess pull-ups. Meg ran off so I changed Drew, who would classically say "Not right now please" when I asked to change his pull-up. After I was done Meg came running back in saying I found one, holding up the three princess pull-up proudly. After she had done this a few times, we found her stash of three princess pull-ups in the bottom of the china cabinet.
When Drew died. Meg was in underpants again, almost trained she was fully trained by summer. Drew was still wearing his three princess pull-up.