Amy Cappellazzo, one of the heads of Christie's postwar and contemporary art department, told The New York Times that the seller is "taking advantage of the strength of today's market and turning his attention to work by younger artists."
Art used to belong to the rarified world of old-money collectors, but today, wealthy Americans who made billions in hedge funds and real estate have joined in, pushing up prices -- and their own snob appeal.
"Many people with a lot of money equate art with status," according to Selkowitz, who said that if you own great works of art, "you can hob nob around people of the art world and the auction houses and that social life. For many that is important, and it does drive the prices up."
Art prices have skyrocketed and some works are overvalued, but the market is still thriving, say most art experts, and even though Wall Street is jittery, luxury buyers are still spending.
The market has soared because these younger, richer art buyers are willing to spend big to get what they want. The high-end bidding has also been fueled by the shrinking value of the dollar that has attracted super-rich Asians, Russians and Europeans.
But that could be changing if, as some pessimists say, even the art markets face a correction.
"Liz" -- one of a series of 13 portraits Warhol did of Taylor, each against a different colored background -- exaggerates the actress's purple eyes and red-hot lips against bright turquoise.
The 40-inch square image is screen-printed, but Warhol embellished her eyes, skin and makeup with paint applied by hand.
An earlier image, against a red background, was bought for $12.6 million by London jeweler Laurence Graff in 2005, the highest price ever gleaned for any of the series.
Warhol, himself an icon of the 1960s, was also fascinated with Marilyn Monroe and Jackie Kennedy, two other fashion symbols of the decade.
At the time, he said of the "Liz" series, "I started those a long time ago when she was so sick and everybody said she was going to die. Now I am doing them all over, putting bright colors on her lips and eyes."
Taylor nearly died of pneumonia in 1960 and required a tracheotomy. Six years later, in 1966, Taylor's weight shot up and she portrayed not the sexy ruler in "Cleopatra" (1963) but a haggard and boozy Martha in "Who's Afraid of Virginia Wolf," which earned her an Academy Award for best actress.
Like her fading beauty, so goes Warhol's appeal, say some arts dealers. That, and high prices, may account for the disappointing sale.
New York gallery owner Clara Diament Sujo told ABCNEWS.com that the $25 million asking price for Warhol's "Liz" was inflated -- not disappointing.
"The market is following a fantasy," she said. "It's such a repetitive image, and you can just put it in the kitchen. Who else needs to see Elizabeth again and again by Warhol, but in another color?"
"Imagine what you could buy with $25 million," said Sujo, whose CDS Gallery was the first to create a worldwide market for Latin American art in 1979. "I could build a collection from Diego Rivera to Roberto Matta to Joaquín Torres-García for the whole family for a lifetime."
"My god," said Sujo, who has seen art trends come and go. "The market is just as buoyant as it could be."
Confident that art sales will survive the gyrations of the economy, Sujo said the latest "Liz" buyer will most likely "put it back in the houses" and make another profit.