"flattering cut" refers to a style of clothing that enhances or accentuates a person's body shape in a way that is appealing or makes them look good. Full definition
I like to use racks like this when seasoning flat cuts of meat so that all of the seasoning on the bottom side doesn't stick to the counter. (nibblemethis.com)
And yes, it's a very flattering cut no matter what color. (whenthegirlsrule.com)
However, saying that choosing the most flattering cut for your face shape is tough is a massive understatement. (instyle.com)