Hiii all! I’m looking for this shoujo manga I read in 2012.
The only thing i can remember is that the main lead (girl) would always appear as a small tiny/ugly character whenevershe is with the main lead(guy). Her appearance evolves from time to time into this super gorgeous tall lady with long black hair and very short straight bangs (kinda reminds me of fashion model Kozoe Akimoto). Sometimes the main girl is a short ugly girl sometimes she’s a gorgeous tall girl! The evil girl in the manga is called megumi!! Pleaseee helppp

I don't remember a "Megumi" being involved but this is probably Yamato Nadeshiko Shichihenge.

Thank uuuuuu for ur help!!! This was what I read in 2012!! U r a life saver