Green’s Dictionary of Slang

a younger, and perhaps more attractive himbo n.; the male equivalent of a bimbette n.

2000		P. Zinta (interview) 2 Feb. 🌐 It’s wrong to strive for perfection in a relationship. No one’s perfect. But I’d never fall for... what’s the male equivalent of a bimbette?...ya, a himbette.
2001		Entertainment Weekly No. 606 55: Dream dates with himbos and himbettes.