butt bra

butt bra

n
(Clothing & Fashion) chiefly informal US and Canadian an undergarment for supporting the buttocks
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
Karin also refers to it as a Butt Bra and, purely for the purposes of research, I visited her website and it looks a bit like a chap's jock strap from the rear.
In India, tummy tuckers have been in demand for a while and now, pushups, butt bras, bodysuits, thigh clinchers are gaining popularity.