Fantasy and science fiction movies often blend the best of every little boy's dream: hot chicks and hot action. RadarOnline.com has created a photographic ode to the lovely ladies who have captured our imaginations by transforming themselves into something not of this world- but still smoking hot!

Check out the gallery for more photos of the women who made the list!

PHOTOS: Sexiest Sci-Fi Screen Stars

From Olivia Wilde's recent turn as Quorra in Tron to Jessica Alba's Sue Storm in Fantastic Four to Zoe Saldana's Neytiri in Avatar to Halle Berry's Orora Munroe and Anna Paquin's Rogue in X-Men- these actresses prove that being smart is sexy.

On the femme fatale side, Charlize Theron literally killed it as Aeon Flux, Jennifer Garner was deadly as Elektra, Natasha Henstridge was a stunning predatory alien in Species, and Scarlett Johansson slinked across the screen in Iron Man 2 as Natasha Romanoff.

Rounding out the list: sci-fi's reigning queen Milla Jovovich for her turns as Alice in the Resident Evil films and Leeloo in The Fifth Element.

Stars hit the blue carpet for the TRON: Legacy premiere, and RadarOnline.com was there to catch all the action.

PHOTOS: Celebs Walk The TRON Blue Carpet

With lasers and smoke machines lighting up the street, the film's stars walked past hundreds of screaming fans to make their way into the El Capitan Theatre in Hollywood.

Leading lady Olivia Wilde, 26, looked stunning in a gold sequined Pucci dress as she posed for pictures with her co-star Jeff Bridges who reprised his role as Kevin Flynn from the original -- and cult fav -- TRON in 1982.

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Other cast members in attendance included leading man Garrett Hedlund, James Frain and Michael Sheen, who told RadarOnline.com he'll be spending Christmas in sunny SoCal "because my daughter is here.

"Then I'm off to Louisiana to shoot Twilight," the Welsh actor added.

The film's stars were joined by an unlikely celebrity fan, Will Ferrell, who just came out to watch the sure-to-be blockbuster.

TRON: Legacy hits theaters December 17.

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Olivia Wilde is heating up the pages of Vanity Fair with a super sexy spread and RadarOnline.com has a sneak peak at the photo shoot which is sure to set pulses racing.

PHOTOS: Who's Hotter? Megan Fox Or Olivia Wilde - You Decide!

The TRON beauty looks stunning posing in a wet, white dress submerged in a a swimming pool and her fierce new look is a far cry from her days in scrubs on the hit TV show House.

In the December issue of the glossy fashion magazine, Wilde talks about her new projects and her upcoming movie role in the western Cowboys & Aliens.

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