Former child star (and now author and indie actor) Macaulay Culkin is 28 today. Others celebrating today: Cassie, the pop star and occasional Diddy flame, is 22. Thalia, the Latin singer (and wife of Tommy Mottola) is 37. Garbage frontwoman Shirley Manson is 42. Interior designer Lisa Jackson is 50. Former vice presidential candidate Geraldine Ferraro is turning 73. Former Homeland Security secretary Tom Ridge is 63. And Times crossword editor Will Shortz is 56.