PEOPLEWATCH

Nothing Compares 2 Sinead: Irish singer Sinead O’Connor is suffering from an undiagnosed illness that may cause her to cancel dates on her U.S. tour, a publicist said Thursday. Concertgoers booed Tuesday after O’Connor cut short her performance by one song at the Star Lake Amphitheater in Pittsburgh. “She’s got to take it easy,” said publicist Elaine Schock “She wasn’t feeling well, but went through the set anyway and cut the encore.” Her recent single “Nothing Compares 2 U” and album “I Do Not Want What I Haven’t Got” topped sales charts.