CLEARED: After a month-long trial in Milan, Luciano Pavarotti has been absolved of tax fraud. Accused of evading $20 million in taxes between 1989 and 1995, the opera tenor could have been sentenced to 18 months in prison. BOOKED: Mariah Carey and Jon Bon Jovi for the Jan. 7 episode of "Ally McBeal." Carey will sing "Lead the Way" from the soundtrack of "Glitter," her recent movie that flopped critically and at the box office. BANKRUPT: Add Planet Hollywood to the list of business casualities since September 11. Once backed by such A-listers as Bruce Willis, Sylvester Stallone and Arnold Schwarzenegger, the movie-themed restaurant saw its business fall 20% in the terrorism slump, Reuters reports, and filed for bankruptcy for the second time. No restaurants in the chain will be shut down during reorganization. DIED: JOE LUBIN, 84, co-writer of "Tutti Frutti" with Little Richard, has passed away. He also composed songs for Pat Boone, Bob Hope, Petula Clark and Doris Day . . . Character actress POLLY ROWLES, best known as the stern Inspector No. 12 for Hanes underwear in a series of commercials in the '80s, died at the age of 87. Rowles started her career in the '30s with such films as "Love Letters of a Star" and "Springtime in the Rockies" with Gene Autry.