After working on and off at Ballers for a while, Rarity has grown to enjoy exercising and getting out more. She normally would love to spend the day working on her various clothing projects and designs, but she has quite taken to spending more time go for a run around Ponyville, Canterlot, or wherever city she was at when visiting one of her stores. It felt so good to just stretch those muscles.
Though, the more she did, the more she unintentionlly triggered her inner himbo self to come out. It was unclear why, perhaps a side effect of transforming or the magic used to induce it? Elusive would certainly have to talk to Twilight/Dusk about it… but it wasn’t a rush. He certainly didn’t mind the growth all THAT much.