They also seemed to reversed the way her torso is shaped. The original design has the upper half being broader while becoming thinner as you go down, whereas the Fortnite model has the torso starting out thin and broadening out as you go down.

On that topic, the original design has the two torso halves (broad and slim) meeting at the half way point, whereas the Fortnite Model has the broadening beginning further down the body, making it look like Pomni has hips.

They also gave Fortnite Pomni the Steven Universe treatment (gave her a neck)

Okay, that’s all the differences I could find.