Teen singer Rihanna is so thrilled with the success of her dancefloor hit PON DE REPLAY, she's started practicing her autograph for fans.

The 17-year-old beauty, real name ROBYN RIHANNA FENTY, has been enjoying international radio play with her uptempo single for much of the summer (05), and she's now perfected her signature in preparation for meeting with her fans.

She says, "I practice (my autograph) all the time. I filled out a whole page once. I had to get (faster at it).

"People told me it was a bit too proper for when you're in a hurry and you've got 100 people poking things at you."