MIMI SHOPS FROM ST MARTEEN

R&B superstar Usher spent $800 in a shopping spree at designer store Blue and Cream in East Hampton on Saturday. Rolling up with music producer L.A. Reid in his new Bentley, Usher bought a white and blue cream thermal hoody with a gold skull emblem, gold limited-edition Nikes and two pairs of high tops for his son.

B+C owner Jeff Goldstein quickly called Mariah Carey in St. Maarten and advised her to buy a pair of the same $500 UES shoes that Usher's son got so that she could give them to Reid's son, Aaron, as a high-school graduation present. She did.