No, they are not related.
Tina Cheri is 5' 2".
Tina Borris is 5' 2".
Tina Su is 5' 2".
Tina Gilton is 5' 2".
Tina Nichols is 5' 10 1/2".
Tina Gradilone is 5' 1 1/2".
Tina Grimm is 5' 8 1/2".
Tina Hobley is 5' 5 1/2".
Tina Kotrich is 5' 9 1/2".
Tina Manera is 5' 5 1/2".
5'4 1/2"