Vastavam web: The fourth season of Telugu Bigg Boss is coming to an in few more days. The finale will take place on December 20 and audiences are curious to known as to who would be the special guest for the finals. He is none other than Megastar Chiranjeevi. The Sye Raa actor will be gracing on the show for the second time again. Last season, Bigg Boss finale was of four and a half hours which had 18.29 TVR as the rating. And when Chiru came in the final hours, the rating went to 22.4 TVR. Coming back to the finals, Abijeet, Sohel, Akhil, Ariana and Harika are the top five contestants.