Galactic cocktail waitresses in micro-mini skirts...

Planet of the Female Invaders (1966)

Directed by Alfredo B. Crevenna

A group of sexy space vixens flies down to Earth, sets up a shop at a carnival (disguising their ship as a ride), and kidnap some earthlings in their scheme to conquer our planet. The humans, including Marcos, a crooked boxer and our hero, Silvia, his love interest, and a gang of comical mobsters out to kill Marcos, are taken to the women’s home planet. There they are held prisoner by the evil queen Adastrea and aided by her selfless twin Alburnia. Meanwhile, a standard issue hunky scientist back on Earth, who happens to be Silvia’s boss, tries to rescue them.