Young hero Allu Sirish and brother of Allu Arjun, has officially announced his engagement. Sirish will be engaged to Nainika On Oct 31st. Along with the picture, Sirish penned an emotional note. “I got engaged to Nainika. Allu Sirush has acted in films like Buddy, ABCD and 1971 but couldn't really make a mark, while his brother Allu Arjun has become a pan India star.