Looking for two stories
I'm looking for two stories I remember but can't for the life of me find
1. A story where a man freezes time and changes a woman into a bbw gradually by changing what her life was like before that moment and watching as she gains weight. I think she is put under the spell with a pudding cup.
2. A story that features two girls. One of the girls obtains an amulet that changes her physically into what another person desires. I can't remember most of the story but I remember it ended with the other girl putting on the amulet and gaining a lot of weight.