• More than a year after listing it for $27.9 million, Tommy Hilfiger has finally found a buyer for his 20,000-square-foot manse in Greenwich. The estate, which is known as Stone Hill, was purchased by the fashion mogul for $18 million in 2005. Now an unidentified buyer is taking it off his hands for $20 million. [WSJ]
• Former Ariba CEO Lawrence Mueller and his wife Mary Kay have gone into contract to sell their condo at 15 Central Park West. The three-bedroom spread, which the couple first listed for $16.5 million in May and reduced to $15.5 million in October, went into contract earlier this week. [Cityfile, PDE]
• Alex Acquavella, the son of top NYC art dealer Bill Acquavella and his heir apparent at the tony UES gallery, has paid $3.9 million for an apartment at 50 Gramercy Park North. The two-bedroom spread features a wood burning fireplace and private terrace, along with views of Gramercy Park. [Cityfile]
• Melvyn Blum, a retired EVP at Vornado Realty Trust, has sold his 28th-floor apartment at the Trump International for $6.4375 million. The buyer is technology executive Sanjiv Ahuja and his wife Anju. [Cityfile]

• Kimora Lee Simmons is looking to unload a decidedly modest home she owns in East Hampton. The 2,300-square-foot home, which Kimora picked up for $690,000 in 2003, is currently listed for $800,000. Don't expect to find any evidence that the Queen of Bling has spent much time there: In addition to the much larger estate she owns nearby, she also has a $20 million mansion in Saddle River, NJ, which has been on the market since 2007. [Real Estalker, PDE]
• Retired tech exec Lawrence Mueller and his wife Mary Kay have dropped the price of their three-bedroom condo at 15 Central Park West five months after first listing it for $16.5 million. The 25th-floor condo, which the couple bought for $5.99 million in late '07, is now priced at $15.5 million. [Curbed, PDE]

• Archibald "Archie" Cox, Jr., the former CEO of Morgan Stanley International who was appointed chairman of Barclays Americas in 2008, has paid $12 million for a 49th floor apartment at One Beacon Court. The three-bedroom pad (left), which had most recently been listed for $14.4 million, was sold by Muirfield Capital Management chairman John Chalsty and his wife Jill. [Cityfile, floorplan]
• Retired tech exec Lawrence Mueller and his wife Mary Kay have put their 25th floor condo at 15 CPW on the market for $16.5 million, or nearly three times more than what they paid for it back in December '07. [Real Deal, PDE]
• Real estate magnate Murray Goodman has dropped the price of his duplex at 960 Fifth Avenue for the second time since listing it for $32.5 million in January. The four-bedroom co-op, which Goodman bought for $1.41 million back in 1981, is now priced at $27.6 million. [Cityfile, Sotheby's]