Upturn Girls has its own special animation separate from the rest of the series. It's especially noticeable on Pearl who has shiny eyes, and makes different faces like the one in the image.

@ThatBeeSwarmamiibo Ohhhh. Pearl looks so much better with shiny eyes.

Dang, the character proportions are completely effed in these modern seasons.

Why is SpongeBob so small?

@CanOSoda101 I mean when you compare him to the fish, he's about their size. Pearl is a whale so it makes sense she is much bigger than them.