frump factor
The degree to which a girl is a frump, or the amount by which an otherwise attractive girl has reduced her attractiveness by gaining weight, dressing sloppy or not wearing makeup or doing her hair.
She was really cute, but sometimes she didn't look that great because she would dial up the frump factor by wearing big loose sweatshirts and ratty jeans.
frump factor
clothes that your mother would wear and tries to get you to buy when she shops with you
mom: honey, this shirt is so cute! let's both get one.
daughter: i would never wear that. it totally has the frump factor.
daughter: i would never wear that. it totally has the frump factor.