R&B star Usher was left feeling exposed at a show to celebrate U.S. President BARACK OBAMA's inauguration when the crotch of his trousers ripped during his performance.

The Yeah! hitmaker took to the stage at the the Kids' Inaugural concert last weekend (18-20Jan12) alongside a host of stars, including Katy Perry, fun., and Stevie wonder.

However, the singer suffered an embarrassing wardrobe malfunction during an energetic routine when the trousers of his suit ripped at the seams. The professional star carried on with his performance before changing into a different outfit.