owed as part of the same agreement . '' Asked by CNN for comment , Leibovitz 's attorney , Steven Brawer , said , `` I do n't have anything I can tell you . '' They have until October 1 to respond to the lawsuit . In the question-and-answer sheet , Art Capital says Leibovitz `` acknowledged that in order to repay the loan she would sell her fine art , intellectual property and real estate assets . She authorized Art Capital to act as agent in the sale of those assets through which Art Capital could recoup its decrease in interest rate . She would have realized a significant gain from that sale . '' It says the loan agreement gave Art Capital `` the right to sell the collateral before the loan came due on September 8 and for a two-year period thereafter . '' One of Leibovitz 's best known photos is of John Lennon with his wife , Yoko Ono , shortly before the Beatles star was assassinated in 1980 . She is no stranger to controversy . In 1991 , Leibovitz photographed a nude and extremely pregnant Demi Moore for the cover of Vanity
NEW YORK -LRB- CNN -RRB- -- Celebrity photographer Annie Leibovitz could lose the right to her entire portfolio of world-famous photographs if she does n't meet a Tuesday deadline to pay back a $ 24 million loan she is alleged to owe . Annie Leibovitz appears before her photo of Demi Moore during an exhibition of her work in June in Madrid , Spain . Leibovitz , who has photographed everyone from the Rolling Stones to Queen Elizabeth II , put her art , intellectual property and even real estate assets up for collateral last year when she consolidated her massive debts . Art Capital Group , which restructured the debts , says Leibovitz agreed `` to make Art Capital her ` irrevocable exclusive agent ' '' of the assets `` in exchange for a reduced interest rate on the loan . '' Now the company is suing Leibovitz for breach of contract , saying she has `` refused to cooperate in the sale of those assets , '' according to a question-and-answer sheet on the lawsuit issued by Art Capital . It also says she has `` refused to pay to Art Capital hundreds of thousands of dollars she