Beyoncé and Solange’s 9-year-old sister Koi bares striking resemblance in new photos 12 November 2019, 12:18 Beyonce and Solange have a half-sister named Koi Knowles, who shares the same father as the famous siblings, Mathew Knowles. Picture: Getty/Instagram 0 Mathew Knowles’ young daughter who is an aspiring entertainer. Beyoncé and Solange…