Usher and his pregnant wife are having an "official" wedding ceremony this weekend.The event will reportedly be similar to the original lavish nuptials the couple had planned to hold at record executive L.A. Reid's Hampton's estate, which was cancelled at the last minute.Usher and Tameka Foster are holding the party in Usher's hometown of Atlanta, Georgia, so they can celebrate their union with their close family and friends.The guest list is expected to include P. Diddy, Beyoncé Knowles and her boyfriend Jay-Z, Ashanti, Janet Jackson and her lover Jermaine Dupri.Usher and Tameka Foster called off their nuptials just two hours before the Hampton's ceremony was due to begin on July 28.They later married in a small, private gathering at Usher's lawyer's offices in Atlanta on August 3. Usher said at the time: "It was beautiful and private. We didn't have a first dance - but we had a lovely, intimate dinner filled with candle lightand flowers."We're going to have a larger wedding ceremony sometime later in the year,or after the baby is born."