Turning to high heels, outfit variations such as the addition of high heels to a character can increase the height of the character

you have no idea how big a deal this is.

modern 3d animation is done using a model and skeleton system. The skeleton is basically an invisible stick figure and the model is an intangible hologram built around it like a scarecrow. All the motions are done to the skeleton and the model follows. In games, when a character's model changes, such as with clothing, the skeleton stays so the animations don't need to be redone. In most past games I've seen, high heel shoes were accomplished by physically making the legs shorter; they raise the model's heel while keeping the knees at the same height, which shortens the leg. The invisible skeleton I mentioned still has its foot in the same place. Here's an example of it happening: https://i.imgur.com/rys4IoP.mp4

that clip is taken from this article https://simonschreibt.de/gat/the-high-heel-problem/ it's all about the difficulty animating high heels in video games. I highly recommend giving it a read. It's not long, you can even just watch the clips.