Christina Aguilera & Jordan Bratman's "IMMORTAL" Night with Max

Posted Monday January 30, 2012 6:29 AM GMT

Reuniting for the sake of the son, Christina Aguilera and ex-husband Jordan Bratman took Max for a family night at Staples Center in Los Angeles, CA on Sunday (January 29).

The "Voice" coach and her former partner didn't seem all that thrilled to be spending time with one another as they coldly walked alongside one another after taking in the recently opened Cirque du Soleil stage show "Michael Jackson THE IMMORTAL World Tour".

The family night out comes a day after Miss Aguilera belted out "At Last" during Etta James' funeral at Bishop Noel Jones City of Refuge in Gardena, California.

After her performance in honor of the late singer, the 31-year-old tweeted, "One of the greatest moments of my life...Singing with my idol, the legendary Etta James. You will be forever missed."