In 2006 , Wilson and her sister Pamela Vincent provided backing vocals at the twentieth anniversary concert of the Former Ladies of the Supremes .
A friend of Payne , Wilson has also provided backing vocals during her solo concerts .
In 2006 , Wilson and friend 's sister Pamela Vincent backing vocals   vocals at the twentieth anniversary concert of the Former Ladies of the Supremes .
A friend of Payne , Wilson has also provided backing vocals during her solo concerts .