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Kristianna Loken in 'Terminator 3: Rise of the Machines Kristianna played T-X, a new Terminator sent in to try to wipe out the rest of the resistance officers in "T3" (2003). Check out the rest of the lovely butt-kicking sci-fi babes who made the cut. (Warner Bros.) Follow FOX411.com on Twitter.![malin ackerman watchme]()
Malin Ackerman in 'Watchmen' The "Couples Retreat" star donned a latex yellow suit to play Laurie Juspeczyk aka Silk Spectre in the 2009 movie. She later talked about how the suit offered no protection and she would end up bruised after filming. Awww! (Warner Home Video) Follow FOX411.com on Twitter.![Padme Amidala Nat Portman]()
Natalie Portman in 'Star Wars: The New Trilogy' The actress was 19 when she first started playing Padme Amidala for the "Star Wars" trilogy. By the time she filmed her last appearance as Padme in 2005, she was already a bona fide star. (20th Century Fox) Follow FOX411.com on Twitter.![Leelo Fifth Element]()
Milla Jovovich in 'The Fifth Element' Milla knows how to play sexy sci-fi chicks all too well. In 1997 she starred alongside Bruce Willis as Leelo, a humanoid woman who was considered to be a perfect being. Aside from looking crazy, she fits the bill. (Sony Pictures Home Entertainment) Follow FOX411.com on Twitter.![Ashley Scott AI]()
Ashley Scott in 'AI: Artificial Intelligence' For her big screen debut Ashley made quite a splash as Gigolo Jane in 2002. She starred opposite Jude Law (pictured here). (Dreamworks Video) Follow FOX411.com on Twitter.![OliviaWildeZum]()
Olivia Wilde in 'Tron' With "Tron: Legacy" heating up the cineplexes, RadarOnline.com figured it was a fine time to chronicle the sexiest females who have graced the big screen in sci-fi and superhero fantasies. Check out the gallery to find out which ladies made the list. Follow FOX411.com on Twitter.![ScarlettJohanssonZu]()
Scarlett Johansson in 'Iron Man 2' Scarlett Johansson slinked across the screen in 2010's "Iron Man 2" as Natasha Romanoff. Between Robert Downey, Jr. and Scarlett, everyone in the audience gets some eye candy. View more of the curvaceous beauty here and check this gallery of hot bikini babes in rocky romances. Follow FOX411.com on Twitter.![NatashaHenstridge]()
Natasha Henstridge in 'Species' The 36-year-old actress was a stunning predatory alien in the "Species" trilogy. She has also starred in "The Whole Nine Yards" and "Deception." Check out these snaps of Natasha and view this gallery of Kelly Bensimon in a tiny black bikini. Follow FOX411.com on Twitter.![HalleBerryZum]()
Halle Berry in 'X-Men' Halle Berry's costume as Ororo Munroe in "X-Men" showed off her show-stopping curves. See more of the Oscar winner here and check out the most recent bikini photos of her here. Follow FOX411.com on Twitter.![JessicaAlba]()
Jessica Alba in 'Fantastic Four' Jessica "don't call me sexy" Alba was both sultry and smart as Sue Storm in "Fantastic Four." Despite what her many fans may think of her, the young actress told E! News, "I never feel sexy. I never do, and that's the truth." Check out these bikini shots of Alba and see this gallery of celebrities in string bikinis. Follow FOX411.com on Twitter.![JenniferGarnerZuma]()
Jennifer Garner in 'Elektra' Jennifer Garner was deadly as "Elektra" in 2005. But that didn't stop Ben Affleck from marrying her in June of that year. See more of the hot mom in this gallery and take a look at stars that indulge in PDA while frolicking in the sun and sand. Follow FOX411.com on Twitter.![AnnaPaquinZuma]()
Anna Paquin in 'X-Men' Before she was kissing vampires in "True Blood," Anna Paquin was a rebellious teen named Rogue in "X-Men." View more photos of Anna here and check out bikini babes who go for older and younger men. Follow FOX411.com on Twitter.![CharlizeTheronZuma]()
Charlize Theron in 'Aeon Flux' Charlize Theron was a deadly beauty as "Aeon Flux." The 2005 movie was about a fatal virus that hits in 2011. Oops! Check out these bikini shots of Charlize and see more bikini babes who take their dogs with them to the beach. Follow FOX411.com on Twitter.![ZoeSandanaZu]()
Zoe Saldana in 'Avatar' Zoe Saldana may have been mostly animated James Cameron's "Avatar," but her sexiness shone through the blue coloring. "Avatar" was the first movie to break the Box Office record since 1997's "Titanic," which starred another beauty, Kate Winslet. View more of Zoe here and take a look at celebrities rocking animal print bikinis. Follow FOX411.com on Twitter.Sexiest sci-fi stunners
The hot characters that make nerds' hearts go pitter pat.
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