Sir Paul McCartney is reportedly planning to call a former model friend of his estranged wife Heather Mills as a witness in their divorce case. Earlier this year (06) DENISE HEWITT claimed she and Mills worked together as glamour model and also entertained Arab businessman during the 1980s. The claims were dismissed by Mills - but Hewitt claims she may be subpoenaed to testify if MCCartney and Mills' battle ends up in court. The 42-year-old tells British newspaper the Daily Mail, "I've heard that I may be called by Paul MCCartney's legal team to appear in court to give evidence over their divorce. "I actually don't want to get involved. However I know they can always subpoena me to appear."