Notes:

This is the original design of Muffet as designed by Michelle Czajkowski.

Source: https://twitter.com/avasdemon/status/645039977663987712

Note the lack of a bow, which seems to carry over to the game sprite as well. I think some fans misinterpret the upper part of the blouse as a bow since in game it moves on its own. Doesn't really matter, I just thought it was an interesting thing to point out since I thought she was wearing a bow too.