Wiktionary
n. A woman who is both sexually desirable and sexually active.
WordNet
Wikipedia
A sex kitten is a woman who exhibits a sexually provocative lifestyle or an abundant sexual aggression. The term originated c. 1958, and was originally used to describe French starlet Brigitte Bardot.
Ann-Margret was described as a sex kitten in the 1964 film Kitten with a Whip. A sex kitten is not always youthful.
Usage examples of "sex kitten".
First you completely ignore me like some Hitler Youth ice-maiden, then you turn into an irresistible sex kitten, looking at me over the computer with not so much 'come-to-bed' as just 'come' eyes, and now suddenly you're Jeremy Paxman.
In essence, Charmaine represented every man's fantasy of a sex kitten.
A few deck hands were playing pool in back, and a teen-aged sex kitten was hunched over the bar snapping her gum.
But when it came to being a lover and sex kitten extraordinaire, she’.
Her moodiness turned me on and she acted like a total sex kitten when I first handed her the cash amount –.