Barbara Walters doesn't look 79, does she? Must be all that Oil of Olay that keeps her so youthful. Happy birthday, Babs! Others celebrating today: Will Smith is 40. Designer Thakoon Panichgul is turning 34. Our very own Secretary of Defense, Bob Gates, is 65. Heather Locklear is turning 47. Actress Aida Turturro is 46. Catherine Zeta-Jones is 39. Filmmaker Pedro Almodóvar is 57. Tate Donovan is turning 45. Cheryl Tiegs is 61. And Hugh Hefner's girlfriend, Bridget Marquardt, might as well move into a retirement home: she's 35 today.