Wiktionary
peekaboo bra
n. (alternative spelling of peek-a-boo bra English)
Usage examples of "peekaboo bra".
Jim Bob looked like the sort of woman who'd be caught dead in a peekaboo bra and bikini-cut panties.
The outline of the peekaboo bra was visible under the flimsy fabric, and one black strap had strayed along her shoulder.
The situation had been awkward awkward, but there wasn't any time to dwell on it (although Sister Barbara had looked real fetching in that scarlet nightie and cute panties, not to forget the peekaboo bra with the tantalizing black strap straying down her satiny shoulder).