Green’s Dictionary of Slang

bodice-ripper n.

[the period costumes and their fate]

a historical novel (or film), with a greater than usual emphasis on sex, esp. the seduction or even rape of the heroine.

[UK]Indep. 30 Oct. n.p.: Prototype bodice-ripper with 17th-century wild child Lorna [...] falling for her clan’s avowed enemy.
[UK]M. Manning Get Your Cock Out 84: ‘I want to savour your body like wine’. Dandy didn’t know where the fuck that little piece of poetry had come from, probably one of her mother’s bodice rippers.
[US]J. Ellroy Widespread Panic 305: ‘I’m not calling them smut, but I’d call them “bodice-rippers,” with lots of skin and some pretty smutty scenes’.