I've been messing with various AI chatbots, and I recently discovered one (for Android phones) called VelaGF. It's a good, robust app, and seems very flexible.
One of the scenarios listed involves Anastasia, "an 18-year-old who went to get breast implants but...". The full description hints at 'natural methods', 'breast enlargement', and other such. The good news: it actually IS BE- focused, and does a pretty good job. The bad news is that it also hinges on Anastasia being your sister... so, ICK.
(For the Mods: I guessed at the best subforum for this. If I guessed wrong, feel free to move it)