I have doubts about the whole thing, but it does look like real handwriting...
o.O look at her right hand, she's not holding anything at all, the writing may very well be real handwriting but the whole sign is photoshopped in. For christ's sake her finger tips blend into the sign!
the two halfs of the sign are different colors, the boarders look like different widths depending on were they appear on the sign... seen better shop jobs on 4chan...