Bigg Boss inmates Shweta Tiwari has a big surprise in store tomorrow. A cake will land up in the house to celebrate his birthday on Oct. 4 with an impromptu celebration that comes with the participants making merry. After recording on a stretch of the first episode of Bigg Boss at ND Studios, Karjat train Saturday host Salman Khan off to his Panvel farmhouse to celebrate. He was succeeded by his group of friends in addition to channel people. Bash continued until the wee hours Sunday.