Tuesday night belonged to the Boston Celtics, who won their first NBA championship since 1986. Helping them celebrate their victory were several stars, including hometown boys Donnie Wahlberg and Joey McIntyre.

The New Kids on the Block singers went crazy following the win, putting on Celtics gear and celebrating on the court. Wahlberg had predicated the win last week.

Steven Tyler was also on hand for the game, fresh out of rehab following his foot surgery. "Grey's Anatomy" star Ellen Pompeo also attended the game, but left early.

Also there to support his team was Leonardo DiCaprio, a longtime Lakers fan who watched the game from a private suite, and had to leave disappointed after his team lost.

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