Usher and Tameka Foster are reportedly scheduled to be married at L.A Reid’s estate in the Hamptons on Saturday night-the couple have even been calling friends like Jermaine Dupri, Jay-Z, and Beyonce to ensure that they will be attending the shotgun nuptials. And Robin Thicke’s Friday night opening of Beyonce’s summer tour has sparked speculation that the blue-eyed soul crooner with be singing at the wedding. Robin sang the track ‘Angels’ and dedicated it to a couple who will soon be married before alluding that he may sing the track at their upcoming wedding.