Mother of Beyoncé and Solange Knowles (4)

I believe the answer is:

(Another definition for tina that I've seen is " Ain't this a girl?".)

I've seen this clue in The New York Times and the LA Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.