It might be because big hats give the kids a sort of distinctive look and can help tell a particular story or convey a certain mood in the cartoon.
Well, there's 'Alice in Wonderland' where the Mad Hatter has a big hat. Also, in 'The Adventures of Tintin', some characters sport large hats.
There's a cartoon called 'Puppy Pals' where the dogs often sport cute hats in their adventures.
You can find this in lots of cartoons. Maybe in mystery cartoons, detectives might wear big hats to look more mysterious. And in children's cartoons, animals might have big hats for a cute effect.
It could be because of the recent global situations where masks have become important. Or it could be part of a story to teach kids about protection. Sometimes, it's just for fun and imagination in the cartoon world.
Maybe it's because baseball hats give those characters a cool and casual look. It's a common style choice in cartoons.
Well, usually these cartoon kids would have big, fluffy hats and warm, colorful gloves. Maybe they have rosy cheeks from the cold and are having fun playing in the snow.
Maybe it's for a Christmas-themed party or parade. They could be celebrating the holiday together in a fun and festive way.
Maybe they are working on a construction site or doing some dangerous activity that requires head protection.
The cute cartoon kids wearing bear hats often have rosy cheeks and bright clothing. The hats might have patterns or pom-poms on them. Sometimes, they're shown playing with toys or interacting with other cute characters.
Maybe they feel hot or they want to be more casual.