I can actually give you an answer to that if you like. It's not a DS3 spoiler don't worry.

Alright so I read an interview with Miyazaki and the rest of the team and they actually mentioned this..

The reason why they're so big is because the person that was working on her made them really big without Miyzaki knowing.

However, when he was about to confront the designer about it he saw that the designer was so delighted with the whole idea that he couldn't get himself to tell him to change it.



So there you have it. You're welcome haha.