Stars Celebrate Boston's Big Win

Wednesday June 18, 2008 09:40 AM EDT

Joey McIntyre and Donnie Wahlberg in Boston

David Dow/NBAE/Getty

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Okay, so it wasn't quite like Los Angeles. But the stars still turned out in force for game six of the Lakers-Celtics championship series in Boston Tuesday night.

And it's a good thing, too, because the Bean Town boys put away Kobe and Co. in a 131-92 rout – becoming the new NBA Champions.

Hometown boy Donnie Wahlberg – who predicted the victory to PEOPLE last week – pulled buddy Joey McIntyre onto the court for some post-game revelry.

The New Kids on the Block crooner then donned championship Celtics gear. "He went nuts on the court," said one onlooker.

Also in the house? Steven Tyler – fresh from his stint in rehab following foot surgery – and Boston native Ellen Pompeo. (Alas, it seems the Grey's Anatomy star has switched her allegiance to Los Angeles – she left the game early.)

Even longtime Lakers fan Leonard DiCaprio was there for the disappointment, watching from a private suite.