Pawan Kalyan celebrates his birthday today (Tuesday). And for his fans, it's like a festival. Affectionately called 'Powerstar' and 'PSKP' by his fans, Pawan is widely considered one of the most successful actors in Telugu cinema. Apart from the fanbase, his family members, industry colleagues and well-wishers have sent in their greetings. However, Pawan never celebrates birthdays; he rather prefers to stay indoors and work.