Dame Shirley Bassey has criticised fellow Welsh songstress Charlotte Church, saying she has "let herself down" by binge drinking.
Dame Shirley Bassey has criticised Charlotte Church
Dame Shirley, 68, said: "When I was that age, there was no such thing as binge drinking".
She also told the Daily Telegraph that Church, 19, should not have crossed over from classical music into pop.
The singers, who are both from Cardiff, have met on several occasions.
In the newspaper, Dame Shirley is quoted as saying: "Charlotte Church? She needs to take a long rest - a year off to go away and think".
Dame Shirley, whose hits include Goldfinger and Big Spender, added: "Because she has made a very bad choice moving into rock music.
"She was once the classical voice of an angel. Not now.
"I think Charlotte has let herself down. When I was that age, there was no such thing as binge drinking.
"It was totally different. We had an adventure... We used to say, 'Let's go to a dance and see what gorgeous fellows we can meet'.
"Now, girls like Charlotte say, 'Let's go and see how many drinks we can knock back'. I think it is dreadful.
"If they live to 30 or 35, they'll know all about it then. You damage the liver and it is not good for the voice. Terrible!"
Church is currently number two in the charts with her single Crazy Chick, which is the first track to be released from her forthcoming album Tissues and Issues.
She recently confessed to downing 10 double vodkas on an average night out, but in a recent interview with GMTV, she insisted that she did not drink all the time or go out any more than anyone else her age.
"I only go out once or twice a week," she told the show.
Elsewhere in the interview Dame Shirley complained about some of her fans.
Her most dedicated fans follow her to every gig she plays and always buy seats in the front row.
The singer said: "They follow me across the country but I don't want to see them there night after night. They think it is mean of me and unreasonable, but they don't see my side of it.
"I am going to a different town every night and I don't want to see the same old faces, it is psychologically upsetting."