Happy 50th birthday to comedy host Jon Stewart. Let’s see who else in Hollywood is celebrating today.

• Actress Mary Elizabeth Winstead (1984)
• Actor Adam Hicks (1992)
• Actress Scarlett Pomers (1988)
• Actress Karen Gillan (1987)
• Singer Trey Songz (1984)
• British model Jacqui Ainsley (1981)
• Rapper Chamillionaire (1979)
• Actress Aimee Garcia (1978)
• Actor Ryan Kwanten (1976)
• Actress Sunny Mabrey (1975)
• Rapper Styles P (1974)
• Black Eyed Pea apl.de.ap (1974)
• Model Anna Nicole Smith (1967; d. 2007)
• Director Alfonso Cuaron (1961)
• Actor Judd Nelson (1959)
• Actress S. Epatha Merkerson (1952)
• Actor Ed Harris (1950)
• Musician Paul Shaffer (1949)
• Director Joe Dante (1946)
• Musician Randy Newman (1943)
• Actress Hope Lange (1933; d. 2003)
• Record exec Berry Gordy Jr. (1929)
• Actor James Karen (1923)

Photos by Apega/WENN.com