It's a better excuse than "because that's what I rolled on the D20 table in the book"...
I really like random D20 tables of little character details and flavour accents - it only takes a couple of small details to make a character feel unique.
My first reflex upon seeing that last panel was imagining a girl group all going "GIRL MAKEOVER TIME!" before leading her to get a new haircut and random other places for clothes, earrings, necklaces and such, all in the spirit of getting her a flashy new look.