Celebrity TV chef Jeffrey "Duff" Goldman is 43 years old (birthdate: December 17, 1974).
Hilary Duff's son, Luca, is just over two months old as of 6/1/2012.
UK actress Anne-Marie Duff is 47 years old. (birthdate - October 8, 1970)
Howard Duff died on July 8, 1990 at the age of 72.
Hilary Duff's mother is Susan Colleen Duff (nee Cobb).
Jimmy Cowan was born on March 6, 1982. He is 27 years old.
Wayne Cowan is 61 years old (birthdate: November 29, 1949).
As of the end of the 2013-2014 NFL season Bobby Cowan is 24 years old.
Hilary Duff is 23 years old
Michael Duff is 33 years old (birthdate: January 11, 1978).
Damien Duff is 32 years old (birthdate: March 2, 1979).
Dick Duff is 75 years old (birthdate: February 18, 1936).
Duff McKagan is 53 years old (birthdate: February 5, 1964).
Hilary Duff is 23 years old; her birthday is September 28, 1987.
Bevan Cowan is one of New Zealand's pro BMX riders. He is 19 years old and HOT as!
Hilary Duff has an older sister, Haylie Duff, who is 25 years old currently.
Hilary Erhard Duff (born September 28, 1987)