Famous Celebrity birthdays on December 18 Born in United States December 18Born in United Kingdom December 18Born in Canada December 18Born in France December 18Born in India December 18Born in Australia December 18 Brad Pitt (61 years)Ashley Benson (35 years)Christina Aguilera (44 years)Katie Holmes Bridgit Mendler (32 years)Kari Byron (50 years)DMX (54 years)Betty Grable (57 years)Tara Conner (39 years)Leila Arcieri (51 years)Robert Wahlberg (57 years)Ray Liotta (70 years)Josh Dallas (43 years)Mara Carfagna (49 years)Steve Austin Steven Spielberg (78 years)Casper Van Dien (56 years)Roger Smith (92 years)Rosie Vela (72 years)Brent Bolthouse (55 years)← Older