Castello de Castagneto Po, the childhood home of French first lady Carla Bruni-Sarkozy is up on the market again, and with 40 rooms and 175 acres of lavish landscape, this is one fairy tale home.

A Rembrandt masterpiece is expected to fetch up to £25 million ($41 million) when it goes under the hammer at Christie’s on December 8, 2009.

The painting could break the record price for a Rembrandt, which currently stands at £19,800,000 paid for Portrait Of A Lady Aged 62, in December 2003.

The painting, titled “Portrait of a man, half-length, with his arms akimbo,” was painted in 1658 and has been unseen in public for nearly 40 years.

The famed art auctioneer has signed a lease for 235,000 square feet of warehouse space in Brooklyn. Christie’s will store fine art in the waterfront building.

Christie’s expects to occupy the six-story warehouse building early next year, according to a company spokeswoman.

The company would not say how much it paid for the space, but commercial brokers estimated costs at $8 to $10 per square foot.

A second group of artworks from the collection of the late fashion designer Yves Saint Laurent and his partner Pierre Berge is expected to fetch up to 4 million euros ($5.7 million) when it appears for sale in November.

Christie’s International’s YSL Part II sale, held in collaboration with Pierre Berge, will take place at its Paris auction rooms on November 17, 18 and 19.

Almost 1,200 pieces will be offered, about half of them from the couple’s coastal retreat, Chateau Gabriel, at Benerville near Deauville in Normandy.

A five-carat cushion-cut pink diamond known as “The Vivid Pink” is set to lead Christie’s Hong Kong sale this fall.

According to a media release, the Vivid Pink is the largest potentially flawless fancy-vivid-pink diamond ever offered for sale at auction.

Property of a private collector and set in a ring by renowned jeweler Laurence Graff, the diamond is expected to fetch between $5-$7 million.

A giant gem will hit the auction block in New York this autumn with the sale of the 32-carat emerald-cut Annenberg diamond, which is expected to fetch as much at $5 million.

The flawless ring-mounted diamond, owned by philanthropist Lee Annenberg, widow of publishing magnate Walter Annenberg, leads the auction house’s magnificent jewels sale on October 21.

“Gems of this size are extremely rare, and their presence on the market is always an important event in the world of diamonds,” said Rahul Kadakia, Christie’s head of jewelry.