In Sims 4, Gary wears a thick diaper on Lilnerdy Simmer's bottom between his legs. On the other hand in Sky Children of the light, Ashley was finished for her candle run in Hidden Forest & Valley of Triumph so she decided take some rest & joins to Sims 4

Gary : Ashley!! You're here!

Lilnerdy Simmer : Ah!~.. Diaper made me had to pee...