The former lead vocalist of The Nolans was told in 2010 she was clear of breast cancer but last year discovered it had spread to her brain, lungs, liver and bones.
A spokeswoman for the family said: “Bernie passed away peacefully this morning with all of her family around her.
“The entire family are devastated to have lost beloved Bernie, a wonderful wife, adoring mother and loving sister; she is irreplaceable.
“They kindly ask people to respect their privacy at this difficult time.”
Bernie shot to stardom with her singing sisters and the group is best known for the 1979 hit I’m In The Mood For Dancing and appeared at the Pavilion a few times during her career and was as I am sure everyone will say, a joy to work with on and off the stage.
Will be sadly missed by everyone that knew her.
Since it opened in 1904, the Pavilion has stayed close to it roots producing and providing a traditional venue for Comedy, Music, Variety and all other areas of Entertainment.
Situated in the heart of Glasgow’s Theatreland, the Pavilion is one of the oldest theatres in Scotland but is well equipped to produce the best in entertainment in the 21st century.
There is something for everyone at the Pavilion, come and see!
The Pavilion Theatre,
121 Renfield Street,
0141 332 1846