Katy tweets birthday wishes to pal Ri-Ri

Katy Perry has wished her "hoodrat" friend Rihanna a happy birthday.

Mon, 20 Feb, 2012 - 16:07

Katy Perry has wished her "hoodrat" friend Rihanna a happy birthday.

The 'Piece of Me' singer took to twitter to send her pal a foul-mouthed message on her 24th birthday today and told her to "keep it real" when she goes out.

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Courts Entertainment Heathrow Place: Beverly Hills Place: London Person: Katy Person: Ri-Ri Person: Katy Perry Person: Rihanna Person: @rihanna Person: Russell Brand Person: Chris Brown Person: @chrisbrown Person: Robyn Person: Chris Person: Kelly Rowland Person: Bruno Mars Event: Brit Awards Organisation: Twitter

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Katy tweets birthday wishes to pal Ri-Ri

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Katy tweets birthday wishes to pal Ri-Ri

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