What the Beyoncé title "6 Inch" refers to

HEELS

Think of a fashion accessory that adds height and pairs well with a "6 Inch" reference.

The clue references Beyoncé's song "6 Inch," which is about high heels. The title "6 Inch" directly describes the height of the heels, making "HEELS" the straightforward answer. It’s a cultural nod to fashion and the song’s lyrics, where heels symbolize confidence and style.