Beyoncé Brings Mom Tina Knowles Onstage at Cowboy Carter Tour to Praise Her 'No. 1 Book': 'Congratulations Mama T'

Beyoncé brought out another special guest during her most recent show — her mom Tina Knowles! The 43-year-old Grammy-winning artist took the stage at SoFi Stadium in Los Angeles on Thursday, May 1, for the second stop on her global Cowboy Carter Tour.