So...here it is. What I've been putting bunch of time working on, an updated AND expanded sheet for both Bowsette and Koopa-hime (Peach Bowser). I've got planned in the future a skirtless Bowsette with and without leggings. Bowsette is also able to use Chain Chompette (https://www.furaffinity.net/view/29260027/) to swing around and throw like in Super Mario RPG.

I specifically chose the SMB3 style for these sprites mostly from the idea of rom hacking a proper Bowsette sprite into the game, one that's more accurate to the crown effects, making one more Peach-like.

Ideas of what I have planned go here:
https://www.furaffinity.net/journal/8927026/

What's been changed from original designs:
Bowsette
-Added ton more sprites
-Fixed boob motion when walking
-Added weapon use sprites for swords, hammers, etc. single handed or two handed
-Added Firesword and Great Firesword because Zelda Breath of the Wild mod of her
-Added additional weapon stuff related to a game idea I had, mainly the shields
-Made sprites to match the SMB3 Bowser to replace 1 for 1 (Bowser Bomb, fire breath, etc.)

Koopa Peach (Peach Bowser)
-Added spikes on shoulders
-Moved tail to above butt instead of from under dress
-Also added some new sprites for her

Bowser (current colors)
-Nothing, he's already perfect...all the sprites shown were made previously for another game project that fell through, just now releasing them

Stay tuned, there's still plenty more to come...