I just found Piper Week 2020 today so i probably wont have enough time to properly contribute so here are just a few headcanons
(By the way the last book i read was TOA book 2 so im a bit behind)
DAY 2 — LGBT
Shes aro-spec!!! I dont quite remember what she said in TOA (about her and Jason's relationship) but i was just like "omg shes aro". I always thought itd be super cool to have a Aphrodite kid be a-spec and i was like "its happening its actually happening". Piper herself doesnt quite know where shes at (shes questioning) i think she might be recipromantic because she thought she was in love with Jason and we/she knows that he loved her, or maybe lithromantic because once they got offically together things didnt go to smoothly on the emotional side.
DAY 6 — FASHION
Its canon that she doesnt dress pretty! I personally think she dresses purposely against all the trends and aims for tacky. Im talking pattern on pattern, loose on loose, jean on same colored jean, blavy. She doesnt care about her hair as seen when she hacked it off asymetrically. I think she would wear makeup but not everyday (i think she wore it when she was trying to get Jason's attention and on days when she feels like it) She doesnt like to be the center of attention and tbh mood. She hated her Claiming look because it brought attention to her. I do however think she looks great in every horrible outfit she wears and whenever the paparazzi get her on camera the articles are always on about how pretty she looks BUT she'd look prettier with a real haircut. She probably also avoids red carpet stuff with her dad because she doesnt want to be sexualized by the media (again mood). Maybe a modeling agentcy would reach out to her but i dont think her or her dad would say yes unless it was a indegious modeling place looking for repesentation. Then it would come down to Piper wanting to connect/reconnect with her heritage but also probably feeling like a fraud for the same reasons. But yeah the only time she would ever be fashionable would be if she was modeling or wanted to impress/intimidate someone