I too agree that it is her fur growing back and nothing to be nervous about. Give Little Miss Lily a greta big belly kiss for me.

By the way, something that I though might be interesting to you.
My mom has two tiger stripped kitties (Tiger-Lily and her daughter Rascal). On both of their tummies when they were shaved for their surgery you could still see their stripes even though all their fur was gone. The vet said that he has only seen a few kitties that their markings look like they are tatooed on their skin. --- Meg