Popular American artist Flo Rida updated his Twitter earlier today with a happy birthday message directed to Big Bang's G-Dragon. Ever since their collaboration for Heartbreaker, it seems the two have created a friendly bond and have been keeping in touch ever since. Fans of G-Dragon also came together on Twitter to start a trending topic, #happygday, which eventually started to rank high in the Worldwide trending list. Hopefully the rapper has been enjoying his way and celebrating his birthday to the fullest!