For the past eight years, homeless advocate Mitch Snyder has hosted Christmas Eve dinner parties for the city's street people and each year the party has grown. The first one was held in the basement of a church. But this year Snyder and Mayor Marion Barry will be hosting the biggest ever at the Convention Center.

More importantly, Snyder, with his genius for getting publicity, plans to turn the ninth annual Christmas Eve dinner into a star-studded gala for the homeless, attended only by the homeless. He has already signed up Martin Sheen, the man who played Snyder in the television movie, and the entire Sheen family -- his wife Janet, sons Charlie, Emilio Estevez and Ramon and daughter Renee. Other stars who have promised to come are Cher, Dennis Quaid, Brian Dennehy, Valerie Harper and Dick Gregory. And tomorrow night, Snyder will be Sheen's guest when the actor hosts "The Late Show" and promises to issue a call to the entertainment community to join the two of them at the Christmas party. Out and About

Maybe they'll call it "Damn Giants" or "Damn Cowboys," or something like that. The Inside Track column in Billboard magazine is reporting that former Redskins coach George Allen is working on a football musical with Bernie Wayne, the composer of "Blue Velvet." Reportedly more than a dozen songs are already written. Look out, Broadway ...

There was a preview of the First International Decorators Showhouse in Washington Monday at the Ritz-Carlton Hotel. Two of the decorators who had worked on rooms, Jane Churchill and Tessa Kennedy, as well as fabric designer Fernada Niven, were there to see if the rooms were ready. The hotel management had an agreement that it would see to the cleaning of the halls, but the rooms were the responsibility of the showhouse organizers. Churchill and Kennedy were determined to vacuum their own rooms, but since neither they nor Niven ever did much cleaning, they didn't know how to get the machine started. In the end, the hotel relented and someone from housekeeping came in to get the rooms ready. The show, which benefits the Irish Georgian Society and the Friends of the National Arboretum's efforts to erect 22 of the original U.S. Capitol columns, runs through July 5 ...

Brooke Shields can now get back to her modeling and acting career full time, even though her days at Princeton didn't seem to interfere much with her outside activities. Escorted by a bodyguard, Shields graduated yesterday with the class of 1987. There were photographers and camera crews from as far away as Japan. "I did it," Shields told reporters in her first and last Princeton press conference. Her show-biz mother Teri sat a few feet away as Shields said, "I've proven something to myself. I didn't expect to get honors but I worked as hard as I could from day one." Also among the 1,105 graduates at Princeton's 240th commencement but not getting any media attention was Andrea Dukakis, daughter of presidential candidate and Massachusetts Gov. Michael Dukakis ...

Former senator Paula Hawkins has reached a settlement with Florida television station WESH on the eve of a trial for negligence against the station stemming from a studio accident that injured her back and neck. Lawyers for both sides would not discuss the agreement reached Monday. The Florida Republican, who lost her reelection bid to former governor Bob Graham last fall, sued the station in January 1986 when a heavy prop fell and struck her at the station's Winter Park studio. She has since undergone three back operations ...

Robert F. Kennedy Jr. received Pace University Law School's first master of laws degree at commencement ceremonies there Sunday in White Plains, N.Y. Kennedy, 33, most recently has been an environmental attorney for the Hudson River Fisherman's Association. This post-law degree gives him a specialty in environmental law ...

Kitty Kelley, the unofficial biographer of Jackie Onassis, Elizabeth Taylor and Frank Sinatra, is to be in New York tomorrow to receive the American Society of Journalists and Authors' Outstanding Author Award for "making a significant contribution to American culture" and for having "substantial influence on the way people think, feel or behave" ...

And the newest thing in T-shirts: A Denver company has one that sports the now-familiar logo on the front -- "Monkey Business Crew." And on the back is imprinted those immortal last words: "Go ahead follow me. You'll be bored" ...