Chris Brown took to his Twitter account to
wish his former girlfriend Rihanna on her birthday.
Brown, 22, tweeted "HAPPY BIRTHDAY ROBYN!" to the
Barbadian singer whose real name is Robyn Rihanna Fenton, on Monday, People
magazine reported.
The `Umbrella' hitmaker, in turn, thanked him through her Twitter
account.
Brown, who pled guilty to assaulting Rihanna in 2009, was
reportedly at her early birthday bash last week, and is also singing on a remix
of her track `Birthday Cake' called `Cake'.