Science Fiction's Beautiful Women

What makes a woman beautiful? Is it her exotic nature, her alien origins or her ability to kick butt?
Science fiction's most beautiful women are exotic, exquisite, human, alien, robot and something more. The most beautiful women come from many different decades and projects. The most beautiful women are more than just pretty faces; they are strong, determined women with beauty on the inside and the out.  Creating a list and limiting the number means that some will really deserving ladies in science fiction will be left off. Feel free to add them in the comments.
Sharon "Athena" Agathon
The beautiful and talented actress Grace Park plays the wide variety of Cylon skin jobs known as the Eights. Her two most distinctive forms are Sharon "Boomer" Valerii and Sharon "Athena" Agathon.  Athena rates a place on the list in place of Boomer because Athena is strong and soft; extremely feminine and capable and deeply in love. Her love for Helo and eventually for their daughter Hera transforms her from more than just a machine or a copy. She is much more than just an Eight.  Other beautiful robotic women: Six, Seven of Nine, Priss
Zhaan Pa'u Zotoh
Zhaan is exquisite and utterly alien.  Her rich blue skin and markings set her apart from most other females. Her time in prison transformed her from raging radical to a calm, religious nearly Zen like leader. Zhaan is an evolved form of plant life and celebrates solar radiation with solargasms. Zhaan's mother nature personality enhances her sexuality, creating a uniquely feminine being that is equal parts provocative and caring.  Other beautiful aliens: Delenn, Teyla, Leeloo
Mystique
Talking about blue-skinned loves, Rebecca Romjin's turn as the blue-skinned chameleon Mystique in the X-Men films reveals a beautiful woman both in and out of her skin. She can look like anyone, so her natural form may seem startling at first, but she is delightfully exotic, dark and playful.  It doesn't hurt that she can kick serious butt.  Other beautiful mutants: Jean Grey, Storm, Rogue
Echo
The character is new, but actress Eliza Dushku is very familiar to fans of Buffy the Vampire Slayer and Angel.  After delighting fans as the Slayer on the Dark Side Faith, Dushku's Echo is an intriguing follow-up. Echo's doll state is sweet, innocent and pure. She lacks guile, yet she remains an intensely beautiful, intriguing and desirable.  It's also hard to beat a woman who can literally become anyone or anything, but it makes you wonder --what is more beautiful, the woman within (her doll state) or the women she can become.  Other beautiful dolls: Sierra
Commander Susan Ivanova
She's hard as nails tough and Russian to boot. The quintessential second in command of the Babylon 5 station, Ivanova is reliable, determined and capable. She also kicks serious butt.  She often opines that the world is ending and while there is no boom today, tomorrow can boom. When the Ranger Marcus falls in love with her and courts her from afar, it's a tragically beautiful tale. Ivanova's humanity, often touched on in relation to her telepathic mother and her own telepathic gifts is brought home as she sobs over Marcus' sacrifice. Other beautiful officers: Colonel Samantha Carter, Dr. Beverly Crusher
Oma Desala
The ascended being is exquisitely beautiful in her form of light and energy or in the human form she takes to communicate with Daniel. From her first appearance, she intrigues with her benevolent and loving gestures. Another name for Mother Nature, Oma's a force of nature as she helps others ascend, making mistakes along the way, but finally taking action when Daniel inspires her to stop Anubis.  While Oma is likely not dead, she is forever locked in combat with Anubis, effectively nullifying both.  Other beautiful ascended include: Morgan LeFay, Adria