Her sensibilities tend more toward, say, an Agent Provocateur bustier than business wear.
Mary, Queen of Scots on Reign is more likely pop off a bustier than a one-liner.
The new vests have received complaints for offering little room in the chest area, making them painful for bustier employees.
A brassiere that enhances the size of the breasts: a sex-bomb blonde in a push-up bustier/ So it's jarring when she hands you a short rubber skirt and bustier
[1990s+; fr French, ''strapless brassiere'']
Having large breasts; bosomy; chesty: But she looked like the others, busty, too slender, bony hips (1940s+)