A portrait of actress Farrah Fawcett by Pop artist Andy Warhol is the subject of a heated legal battle. Actor Ryan O’Neal, who had a long relationship with Fawcett, is fighting the University of Texas at Austin for ownership of the work.

When she passed away in 2009, Fawcett left her art collection to the University of Texas, her alma mater. However, O’Neal is claiming that Warhol had personally given him the silkscreen of Fawcett. The case, which went to trial Wednesday, is expected to take two weeks to resolve.

Warhol’s portrait of Fawcett is estimated to be worth $30 million.