Bill Wyman has been diagnosed with prostate cancer.
The former Rolling Stones bassist has revealed he's undergoing treatment for the disease and is hopeful he'll make a full recovery as it was caught in the "early stages".
A spokesman for the 79-year-old rocker said: "Bill Wyman, former member of The Rolling Stones, has been diagnosed with prostate cancer.
"He is undergoing treatment and is expected to make a full recovery as it was caught in the early stages."
The devastating news will no doubt come as a shock to fans as he was the picture of good health last weekend when he was spotted at the lavish wedding of Rupert Murdoch and Jerry Hall in London alongside his wife Suzanne Accosta and Sir Bob Geldof and his wife Jeanne Marine.
But, despite doctors' positive prognosis, Bill - who has a son from his first marriage and three daughters with his spouse Suzanne - has asked for privacy during this "difficult time."
Bill joined the Rolling Stones as the band's bass player in 1962 but left 31 years later to pursue solo projects.
He went on to form his own band Bill Wyman's Rhythm Kings in 1996 but reformed with the Rolling Stones briefly in 2012 to play with the legendary group at some of their 50th anniversary shows.
However, he said at the time he had no interest in rejoining the band - consisting now of Sir Mick Jagger, Keith Richards, Ronnie Wood and Charlie Watts - full time as he had "better things to do".
Last year, Bill released his solo album 'Back To Basics' - his first in 33 years - compiled of 60 unreleased tracks he had found on old demo tapes from over the years.
But his career isn't just limited to music as he has also designed his own metal detectors and opened a bistro in London called Sticky Fingers.