Jazz singer Diana Krall, 42, and her husband Elvis Costello, 52, are the parents of twin boys. The new arrivals -- named Dexter Henry Lorcan and Frank Harlan James -- were born on Wednesday, according to a statement yesterday from the couple. "We are ecstatic!" the statement read, going on to add that "mother and sons are doing splendidly." The couple live in New York. This is Mr. Costello's third marriage, and Ms. Krall's first.