Rihanna, the new Jr. diva on the block, was seen leaving “The Late Show with David Letterman” yesterday, and she was giving off major divatude! The songstress was all things diva; dog in hand, mass security, and an awaiting SUV. Someone’s been taking notes!

Fans called to the uninterested singer to sign autographs — or even just throw a wave their way — they got neither. One new ex-fan yelled, “Don’t do that Rihanna! We won’t buy your CDs!”

A girl gets a hit or two and starts getting all snootified! Hope her umbrella can cover that big head!

Image updates coming tomorrow!