Christie Brinkley reportedly owes the US government over half a million dollars in unpaid taxes.
According to the Associated Press, the former model owes $531,000 in back taxes and the IRS filed a lien on November 21 on Brinkley's residence, a mansion in Long Island, New York.
Brinkley's spokeswoman Claire Mercuri said that her client was surprised to hear that a lien had been filed, adding, "Christie Brinkley has instructed her team to resolve the matter immediately."
According to the UK Daily Mail, Brinkley had an estimated worth of $80 million in 2008 and owns a lot of real estate, mostly in the Hamptons.
Brinkley recently opened up in an interview with The UK newspaper The Telegraph about her past marriages and said she realized that she will never walk down the aisle ever again.
Brinkley has been married four times, to artist Jean-Fran?ois Allaux, Billy Joel, real estate developer Richard Taubman and most recently to architect Peter Halsey Cook. Brinkley and Cook finalized their divorce in October 2008.
Her divorce with Cook made headlines when Cook admitted to having an affair with his an assistant, who was 18-years-old at the time, as well as having an online pornography habit, according to People.
"I have to be careful in husbands. Unfortunately, I trust everybody. I just think everybody is great," Brinkley told the newspaper.
In July, Brinkley made her debut in London's West End theater district in "Chicago" as Roxie Heart, a role she played on the Broadway stage earlier this year. However, according to Broadway.com, Brinkley was forced to postpone her gig because her mother was admitted to the hospital over the weekend to undergo emergency surgery.
Brinkley is one of many celebrities who have played Roxie in the hit musical including Brooke Shields, Marilu Henner, Ashlee Simpson, Michelle Williams and Melanie Griffith.
The 57-year-old made her acting debut in 1983 in "National Lampoon's Vacation" with Chevy Chase. She also appeared in its 1997 sequel, "Vegas Vacation."