Today Show host Kathie Lee Gifford paid a heartfelt tribute to her former co-host Regis Philbin on his would-be 91st birthday.Gifford, 69, posted a throwback photo standing alongside Philbin during a taping of “The Morning Show,” which later became “Live with Regis and Kathie Lee” in 1988. “I miss Regis every day,” Gifford said of her longtime friend.