USHER BRINGS OUT SOME HELP ....TREY SONGZ AND AUGUST ALSINA IN CHICAGO

R & B crooner Usher brought the “UR Experience” to Chicago’s United Center on Monday night, and he was joined by some special guests. After opening for Usher earlier in the evening, August Alsina returned to the stage along with Trey Songz to perform the remix to “I Luv This Shit,” and the ladies went wild.

“I went on tour with Usher a couple years ago. It changed my life,” Trigga told the crowd. “Make some noise for one of the greatest in the game—greatest there ever is, greatest there ever will be. I love you, boy.”

Usher also welcomed Rico Love, who penned several of his hits including “There Goes My Baby,” to perform his single “They Don’t Know.”

The “UR Experience” hits the west coast later this week before winding down on December 14 in Tampa, Fla.

Watch the R&B superstars touch down in the Chi.