Sibling Rivalry (Patreon)

What a better way to officially introduce Isabelle's older sister! Meet Annabelle. Shes normally shorter and thicker then Isabelle but she has a very similar affliction. Only instead of water making her grow, Annabelle gets bigger with heat and shrinks in the cold. 

Im sure there are a lot of fun and naughty things we can do with there two. Let me know if you have any ideas ;)