LONG ISLAND, NY  [Monday Jul.30.2007]  /WMQT.com/ -- R&B star Robin Thicke was supposed to sing at his good friend Usher's wedding this weekend in Long Island, NY, reports Teenmusic.com.

Usher planned to tie the knot with his pregnant fiancee Tameka Foster at producer Antonio 'l.a.' Reid's house.

The couple confirmed both the engagement and the pregnancy last month. According to a source at Life + Style magazine, "They were planning on getting married at the end of the year, but when Tameka found out she was pregnant, they rushed to have the wedding."

It's now been reported that Usher has called off the wedding. NME.com reports that the star's representatives issued a statement Saturday, July 28th announcing that they were cancelling their ceremony, and said, "no additional information will be given regarding the circumstances of the cancellation."

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