TORONTO — This year's star-studded World Music Awards will honour Quebec songstress Celine Dion for her massive worldwide record sales in a televised spectacle that includes a performance by eastern Ontario pop star Avril Lavigne.

Actor Michael Douglas will present Dion with the Diamond Award at the World Music Awards in Las Vegas on Wednesday, Sony Music Canada said in a release that boasted their artist has been deemed the biggest-selling female artist of all time.

The award recognizes artists who have sold more than 100 million albums in their musical career. Sony said Dion has sold more than 175 million albums worldwide. Her next CD, Miracle, hits stores Oct. 12.

The Diamond Award -- featuring a real diamond embedded in the trophy -- was presented last year to singer Mariah Carey.

The World Music Awards honours the best-selling and most popular music artists of the year, and will feature performances by music artists including Usher, Alicia Keys, Marc Anthony, Kanye West and Josh Groban.

A Legend Award will be presented to music mogul Clive Davis for his outstanding contribution to the music industry.

The World Music Awards benefits the Monaco Aide & Presence Foundation, a charity under the honorary presidency of Prince Albert. The proceeds go towards building hospitals, schools and orphanages, and this year's show will be devoted to the Princess Grace clinic in Africa.

The awards are to be broadcast Wednesday on ABC, 9 to 11 p.m. ET.

Sony said Dion's Las Vegas show, A New Day... is expected to draw its millionth fan on Sept. 30 at the Colosseum at Caesars Palace.