HOLLYWOOD (AP) _ Robert Wagner, Bop Hope and Jimmy Stewart will be on hand to lend a touch of glamour as Hollywood celebrates its 100th birthday.

Wagner will dedicate a ''Walk of Fame'' star to his late wife, Natalie Wood, during Sunday's ceremonies.

Hope will drop an Oscar statuette in a time capsule, and Stewart will bring a letter from former colleague Ronald Reagan. Buddy Rogers will provide a copy of ''Wings,'' the movie that won the first best-picture Oscar.

Boosters hope the centennial salute will help bring new life to a community beset by decaying stores and crime.

''We want to celebrate not only the entertainment industry, but this little community of 14 1/2 square miles and 200,000 people,'' said TV personality Johnny Grant, Hollywood Centennial chairman.

The celebration will be marked by the noon pealing of Hollywood's church bells, followed by a champagne reception at the Roosevelt Hotel's Blossom Room, site of the first Academy Awards in 1929.

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LOS ANGELES (AP) - Industrialist and philanthropist Armand Hammer has received an award from the president of Mexico in recognition of his aid in the aftermath of two disastrous 1985 earthquakes.

The award, signed by Mexican President Miguel de la Madrid, was presented Thursday by Mexico's general consul in Los Angeles, Augustin Garcia-Lopez.

Hammer's donations of medical supplies and of money to rebuild damaged hospitals showed ''his love and friendliness toward Mexico and, in general, toward the great causes of humankind as an international man,'' the award said.

Hammer is chairman and chief executive of Los Angeles-based Occidental Petroleum Corp.

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PHILADELPHIA (AP) - Singer Patti LaBelle will give a benefit concert here next month, with most of the proceeds going to AIDS research.

Eighty percent of the money raised by the Feb. 20 solo concert will be donated to the American Foundation for AIDS Research, a non-profit research organization, promoters said. The remainder will go to a Philadelphia food bank and a youth support agency.

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WEST PALM BEACH, Fla. (AP) - Michael Talbott, who portrays Detective Stanley Switek on the NBC's ''Miami Vice,'' is sponsoring a charity polo match to benefit the families of two real-life detectives who died in a shootout.

Fort Pierce Police Lt. Grover Cooper and Officer James Wouters were gunned down Jan. 12 in a raid at a rural Florida motor home where cocaine, marijuana and cash were found.

The benefit will be held Feb. 22 at the Palm Beach Polo and Country Club, club spokeswoman Diane Jackson said this week.

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PORTLAND, Ore. (AP) - King Michael, exiled monarch of Romania, attended the baptism of his month-old granddaughter here.

Michael, 65, and his wife, Queen Anne, were present at Wednesday's baptism of Princess Angelica Marguerita Bianca.

The baby is the daughter of Princess Irina, King Michael's third daughter. She and her husband, John Kreuger, own a horse ranch near the southern Oregon coast.

The king was forced by the communists to abdicate in 1947. He lives in Geneva and is an executive with Lear Corp., the U.S. aircraft company.