Joy Beverley, who was best known as one third of the 1950s pop group The Beverley Sisters, died this morning, her family said.
She suffered a stroke last week.
Billy and Joy's son Vince Wright, aged 67, today said the family were all devastated by the death of Joy, who lived in Whetstone, north London.
He said: "We all thought the world of her and we are devastated she is gone. We are a very close-knit family.
"She was a very bubbly, but private, character.
"We are all going to miss her terribly, she has been a part of our lives for so long now it really is going to be a big loss for all of us."
Wolves vice-president Baroness Rachael Heyhoe Flint added: "During Billy's time at the club from when Sir Jack took over in 1990 she became very much associated with Wolves and I vividly remember Joy and the other Beverley Sisters leading us in song at the opening of the Billy Wright stand in 1993."
Billy and London-born Joy got married on July 28, 1958 at Poole Register Office. They were married for 36 years until Billy died of cancer in September 1994.
Joy was known as 'the middle one' of the Beverley Sisters, who had hits with Sisters, I Saw Mommy Kissing Santa Claus and Little Drummer Boy.
Joy and Billy had three children, Vince, Vicky and Babette, and three granddaughters and one grandson.
Shropshire-born Billy made 541 first-team appearances for Wolves and won 105 England caps. He is regarded as one of England's greatest ever footballers and has a statue in his honour outside Molineux.