Xtina fêtes family at benefit

CHRISTINA Aguilera performed for a crowd of power players in the Hamptons Saturday and paid tribute to her fiancé Matthew Rutler as they celebrate their daughter Summer Rain’s first birthday.

Aguilera took to the stage at the Alist Apollo in the Hamptons benefit at billionaire Ron Perelman’s Creeks estate in East Hampton. Other performers at the starry show included Smokey Robinson, Jon Bon Jovi, the Roots, Emeli Sandé, Jamie Foxx and Pitbull.

Aguilera told the crowd, “It is a special weekend for me and my family. Tomorrow my first daughter is turning 1. Its a happy mommy moment . . . and in honor of that, I am going to dedicate the next song to the man who made that possible, her father, Matthew Rutler.” Aguilera then launched into the Etta James classic “At Last.”

Politicos among the crowd included Mayor Bill de Blasio, who was spotted mingling with billionaire Patriots owner Bob Kraft and trying on his Super Bowl ring. Roots leader Questlove was seen handing de Blasio one of his hair combs to give to his son, Dante.

Earlier Saturday de Blasio had lunch with George Soros and his son, Alex, at the leftleaning billionaire’s Southampton estate. We’re told they “discussed economic issues important to NYC.”

A lowkey Chris Christie also attended the Apollo benefit, with sources telling us the Republican presidential candidate was staying in the Hamptons with Jon Bon Jovi, “even though Jon is a Hillary supporter,” said a source.

Other guests included Jack Nicholson, Lewis Hamilton, MaryKate Olsen and Olivier Sarkozy, Jimmy Fallon, Leonard Lauder, Paul Tudor Jones, John Sykes, Jay Penske and Elaine Irwin, and music moguls Irving Azoff, Tommy Mottola and Charlie Walk.

The exclusive event — tickets for which started at $15,000 and were as high as $250,000 for premium tables — raised a record $4 million for Apollo educational programs.

(right) tries on Patriots owner Robert Kraft’s Super Bowl ring at the starstudded Apollo in the Hamptons charity bash on Saturday night.