'Harry Potter' Stars Wish J.K. Rowling Happy 50th Birthday

See the sweet things they said about the author.

— -- Today is J.K. Rowling's 50th birthday.

Finally, Matthew Lewis, who played Neville in the series, said, "I would like to thank Jo for changing MY life ... That's not even to mention her generosity and loyalty when it has come to supporting everything that I have done in the years since Harry Potter."

There's many more birthday wishes and it's nice to see such admiration from the stars for the creator of a game-changing franchise.