Estrogen therapy for transfems takes a while to have noticeable effects.
Two of the earliest effects for people are softer skin and growing areolas. I read a blog yesterday where the author said one of the first effects she noticed was her nipples growing to look like cis women's.
huh, honestly i never noticed that, i think i was too busy listening to my voice drop and holding a magnifying glass to my chin to see if the beard is growing out already or not :')