Mumbai (Maharashtra) [India], April 8 (ANI): Fans can’t keep calm as it is Allu Arjun’s birthday today. At midnight, his die-hard supporters gathered outside his residence in Hyderabad to wish Pushpa star on his big day. The videos of Allu Arjun’s fans and the birthday boy meeting them are going viral on social media. Allu Arjun waved and thanked the enthusiastic crowd for their wishes and support. In one of the viral videos, dressed in a printed shirt and joggers, Allu Arjun can be seen stepping out of his residence as his fans cheer for him. He greeted them with folded hands and waved at the…