Found: InVisible
From Seven Seas: another OEL one-shot, and from the description this one might appeal to shoujo fans, and maybe a significant fraction of the BL fanbase —

from the publisher,
Seventeen year old Kay is not your average NYC high school student. From a young age, Kay has worked as a model in print, commercials, and on the runway. And now her career has recently undergone a dramatic upswing—she’s been booked for a runway show and several shoots in Japan.
On the morning of her departure, Kay awakens to a shocking change in herself, which threatens her entire career and forces her to reconsider her priorities: she has inexplicably been transformed into a boy!
Kay’s boyfriend Adrian, a trained make-up artist, comes to the rescue. He convinces Kay that she’s still pretty enough to play the part of a girl. With a little make-up and the right outfit, Kay’s nearly convinced that the charade might work… but once she clears airport security she wonders how she is going to spend a whole two weeks in Japan pretending to be the girl she once was?
Not much to add to that, since I haven’t read it past 60 or so pages of the 100+ page preview on the Seven Seas site. (that’s more than half the book)














