Katerina Kazelis (4 March 1977 in Malmö, Sweden) is a Swedish singer and Big Brother 2011 housemate of Serbian and Greek origin. Before entering the Big Brother house on February 20, 2011 she was a school teacher. Kazelis has been nominated each week except for two when she won immunity after winning a Big Brother task, however, she also survived each elimination round since week one in the house. On May 8, Kazelis was evicted from the Big Brother house.