Fleur de Lys: Mariah Carey Reportedly Bid on World's Most Expensive Mansion

She and husband reportedly bid on $125 million Beverly Hills estate.

March 20, 2009 — -- Pop diva Mariah Carey may be moving out of the Big Apple and into the biggest Beverly Hills mansion.

Newlyweds Carey and Nick Cannon have reportedly placed a bid on the Fleur de Lys estate in Beverly Hills, the world's most expensive mansion, listed at $125 million.

The mansion is owned by Texas billionaire David Saperstein and was remodeled with Italian marble, gold-embossed leather walls and gold-leaf crowned moldings.

On five acres, the 45,000-square-foot, French-style estate also boasts 15 bedrooms, a ballroom, multiple kitchens, a screening room and a library complete with a first-edition book collection.

Cannon and Carey plan to pursue their careers in Los Angeles and have been house hunting for the last three months.