What Qualifies as a "Flat Butt"?

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In a candid moment after a 2004 show, Oprah addressed the body image concerns of one audience member head-on. The woman asked fashion mavens Trinny Woodall and Susannah Constantine from the BBC series What Not to Wear how to make her flat behind appear fuller.

"That is not a flat butt, sister," Oprah assured her. The woman remained unconvinced until Oprah—along with the rest of the studio audience—playfully challenged this belief about her appearance.