Rugrats is a series about the adventures of these toddlers.
Tommy is the Bravest,Lil and Phil are twins,Kimmy is Chuckies step-sister.
They all wear strapped diapers.Phil wears a pair of Blue shorts over his,Lil and Kimmy have dresses over theirs.Tommy just has a blue shirt and diaper.
There were a number of Interactions in this series
In 'Barbeque story' Tommy's strap comes undone and his diaper falls down.
In'Naked tommy'Tommy stripped off his clothes,Phil and lil also did so.