It wasn’t so long ago that the Davio’s in Park Square was the only Davio’s. Not anymore. In short order, chef/restaurateur Steve DiFillippo has opened locations in Atlanta, Philadelphia, New York City, Lynnfield, and now Braintree. The newest Davio’s, at the South Shore Plaza, opened Monday with a party attended by some of DiFillippo’s pals, including Celtics owner Wyc Grousbeck and wife Emilia Fazzalari, car king Herb Chambers, actor Kevin Chapman, ex-NFL player Steve DeOssie, bluesman James Montgomery, actress Erica McDermott, and sports talkers Glen Ordway, Butch Stearns, and Dale Arnold. . . . Supermodel Tyra Banks dined at Legal Sea Foods at Logan the other night, and Pats coach Bill Belichick and girlfriend Linda Holliday chowed at Boston Chops.