Sales of Believe - which recently spent seven weeks at the top of the charts - reached 1.46m at the weekend, taking it above Dion's theme from the blockbuster movie.
The Canadian singer's single had been the biggest-selling of the year, notching up 1.42m on the back of the phenomenal interest in the film, which stars Kate Winslet and Leonardo DiCaprio.
![[ image: width=150]](/olmedia/235000/images/_239957_cher_new_150.gif)
But Cher's single is continuing to sell well - even though Irish girl group B*Witched knocked her from the number one spot on 13 December.
Believe is at number four in this week's Christmas chart - the biggest-selling week of the year for the record industry.
Chart expert Jason Legg from the HMV retail chain said: "It's almost the perfect pop record. It's also got the disco market covered, she's a huge gay icon and it's the sort of song that people can do the housework or wash the dishes to."
It also proves the enduring appeal of the 53-year-old singer - who had her first British chart hit 33 years ago.
Another chart record was set by soul veteran Isaac Hayes in his role as Chef, from adult cartoon South Park.
![[ image: width=150]](/olmedia/235000/images/_239957_george_michael150.jpg)
His suggestive hit Chocolate Salty Balls sold just 8,000 behind the Spice Girls' number one Goodbye - making it the biggest-selling number two song since 1984 on 372,000 sales.
George Michael's Ladies And Gentlemen: The Best Of... compilation sold more than 300,000 copies last week, the most ever sold over seven days by a double album. This breaks records set by Frankie Goes To Hollywood and Elton John.
The album is now the third-biggest-selling of the year, with only The Corrs' Talk On Corners and Robbie Williams' Life Thru' A Lens ahead of it.
HMV's Jason Legg said: "If George Michael continues to sell as well as he has been doing until the end of the year he looks likely to have the year's biggest-selling album - only 50 days after it was released."
By contrast, both The Corrs and Robbie Williams released their albums in 1997.
Thrice Spice for Christmas
(18 Dec 98 | Entertainment)
Cher
Paradise Is Here: Cher fan page
George Michael
South Park
Isaac Hayes
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