macca-worst.jpgPeople magazine’s annual best and worst year-end wrap-up hits the stands Friday, but senior editor Galina Espinoza gave “Good Morning America” a sneak peek at which celebrities made the list.Biggest Feud of 2007: This honor goes to former Beatle Paul McCartney and his ex-wife Heather Mills. At stake is the custody of their 4-year-old daughter, Beatrice, and millions of Sir Paul’s pounds.

Espinoza called it one of the ugliest divorces of all time, dragging on for more than 18 months. Mills did a number of television interviews trashing McCartney, alleging abuse, drug use and violent rages. Her bid for sympathy seemed to backfire, while McCartney has been seen stepping out with a number of attractive women.