USHER under fire in court in one of the nastiest child custody battles in years as he accused of sleeping with one of his wife’s bridesmaids!

After breaking down in tears on the stand during the brutal child custody battle with ex-wife, Tameka Foster, Usher was back in court Wednesday under fire over whether he slept with one of her bridesmaids!

Under cross examination Usher, 33,  was asked by Foster’s attorney if one of them left because she caught him sleeping  with Maya Fox Davis, who was reportedly in the couple’s wedding party.

Earlier in the vicious proceedings, Usher cried when the lawyer suggested that he cared more about partying than being a parent.

 The OMG singer confessed to smoking pot in the past, but adamantly denied taking drugs in front of his children, reported.

Usher also told the Atlanta court how Foster once flew into such a jealous rage that she threw food at him, spat at his girlfriend and threatened, “I'm gonna kick your ass. Bitch, get out of the car.”

After meeting in January 2007, Usher and Tameka were married in a private ceremony the following August, and their son, Usher Raymond V was born that November.

On December 10, 2008, Tameka gave birth to their second child, Naviyd Ely Raymond.

Sadly, wedded bliss was short-lived and in February 2009, Tameka suffered a cardiac arrest in Sao Paulo, Brazil, while reportedly prepping to get plastic surgery.

Despite rallying to his wife’s aid, Usher filed for divorce that June claiming they had lived apart for almost a year.