So on an SFM envelope- people address them to you right? Not the stars themselves?
I received my Selena Gomez autograph (I used my First then last name when i sent in august) and and envelope came back to me (my success) in her exact handwriting with my first and middle name (i used on the email)
I know it's her handwriting because I've seen it on the questions she answers

Opinions?
Thanks,
Selenaanddemifan
(A couple of envelopes come back to me in their writing because when you see a signature- that sort of tells their writing.)