With Sigourney Weaver celebrating her 63rd birthday on Oct. 8, join us for a look back at the celebrated actress' life and career so far.
1979: Sigourney Weaver, born Susan Alexandra Weaver on Oct. 8, 1949, in New York City, first made waves as Ellen Ripley in director Ridley Scott's "Alien."
1984: Sigourney Weaver in "Ghostbusters"
1986: Sigourney Weaver in "Aliens." The film earned Weaver her first Oscar nomination for Best Actress.
1988: Harrison Ford, Melanie Griffith and Sigourney Weaver in "Working Girl." The film earned Weaver an Oscar nomination for Best Supporting Actress.
1988: Sigourney Weaver in "Gorillas in the Mist." The film earned Weaver her second Oscar nominations for Best Actress.
1992: Sigourney Weaver shaved her head to play Ripley for the third time in "Alien 3."
1993: Sigourney Weaver and Kevin Kline in "Dave."
1995: Sigourney Weaver arrives at the 67th annual Academy Awards on March 27 in Los Angeles.
1997: Sigourney Weaver and Winona Ryder in "Alien: Resurrection."
1997: Sigourney Weaver reteams with Kevin Kline for the drama "The Ice Storm."
1998: Weaver waves to the crowd as the Hasty Pudding 1998 Woman of the Year on Feb. 9 at Harvard Square in Cambridge, Mass.
1999: Sigourney Weaver in "Galaxy Quest."
1999: Sigourney Weaver poses with her newly unveiled star on the Hollywood Walk of Fame on Dec. 16.
2001: Sigourney Weaver in "Heartbreakers."
2001: Sigourney Weaver during "The One and Only Aretha Franklin" tribute at Radio City Music Hall in New York on April 10.
2003: Sigourney Weaver and New York Mets pitcher John Franco talk about baseball in Port Saint Lucie, Fla. Weaver visited the Mets during a spring training practice session before a special advance screening of her new film "The Guys."
2004: Sigourney Weaver and William Hurt in "The Village."
2004: Sigourney Weaver waves as she arrives for the annual Empire magazine film awards in London on Feb. 4. She won the Lifetime Achievement Award at the ceremony.
2006: Sigourney Weaver waves to photographers as she arrives at the opening of the 56th Berlinale International Film Festival in Berlin on Feb. 9.
2008: Sigourney Weaver records dialogue as the ship's computer in "WALL-E."
2008: Oprah Winfrey and Sigourney Weaver pose at a Dec. 5 breakfast in Beverly Hills, Calif., honoring the selections for The Hollywood Reporter's Women in Entertainment: Power 100 list.
2009: Sigourney Weaver, Joel Moore, James Cameron and Sam Worthington in "Avatar."
2009: Giovanni Ribisi and Sigourney Weaver in "Avatar."
2009: Sigourney Weaver in "Avatar."
2009: Sigourney Weaver at the 2009 Golden Globe awards.
2010: Sigourney Weaver in "You Again."
2010: Sigourney Weaver with her husband, Jim Simpson, at the 2010 Oscars. Weaver and Simpson have been married since 1984 and have one child together.
2010: Sigourney Weaver poses at the premiere of the movie "Scott Pilgrim vs. the World" at the Grauman's Chinese Theatre in Hollywood on July 27.
2011: Nick Frost, Sigourney Weaver and Simon Pegg pose for photographers at the world premiere of their movie "Paul" in London on Feb. 7.
2011: Weaver in the thriller "Abduction."
2012: Weaver poses at the premiere of the film "Red Lights" during the Sundance Film Festival in Park City, Utah, on Jan. 20.
2012: Weaver plays a secretary of state and former first lady in the TV miniseries "Political Animals."
2012: Weaver poses for a portrait in New York City on July 10.