Listmania: Ten Movies About Vicious Alien Creatures Who Look Like Hot Babes
Species (1995) Natasha Henstridge stars as a slimy alien monster. A powerful cautionary tale about the dangers of aliens who look like supermodels. Followed by two sequels, Species II (1998) and Species III (2004), which also star Natasha Henstridge. (Admit it: you thought I was going to count these separately to make up the numbers.)
Femalien Alien played by Venesa Talor comes to Earth to comes to Earth to observe humans engage in sexual interaction. Her fake boobs sort of give her away but she does fulfil her mission. Followed by a sequel, Femalien II (1998).
Vampire Vixens from Venus (1995) Aliens that have come to earth to harvest an illegal drug that human males produce at the height of sexual arousal, at which time the aliens suck this stuff out of the men leaving them like raisins.
Decoys (2004) In this movie it turns out the that the girls on a college campus are actually aliens. Happens all the time. Followed by Decoys 2: Alien Seduction (2007)
Illegal Aliens (2007) Anna Nicole Smith stars as one of three aliens come to protect Earth against illegal aliens
Star Trek: First Contact (1996) In this Star Trek sequel (I think it was the eighth in the series but I lost count), it turns out that the evil Borg have a queen who looks really hot in a cat suit.
The Fifth Element (1997) This very funny movie features Bruce Willis as a cab driver who befriends alien Mila Jovovic. (mmmm Mila Jovovic)
Lifeforce (1985) A group of astronauts come across a spaceship inhabited by "hibernating" space-vampires that include Mathilda May, an alien with a serious aversion to wearing clothes.
She Creature (2001) In which we learn not to mess about with mermaids, no matter how hot they may look.
Galaxy Hunter (2004) Shelley Michelle takes on her first leading role as a secret agent from another planet who battles evil and tries to save the world from mass destruction.