Green’s Dictionary of Slang

nottie n.

[pun on SE not + hottie n.2 ]

one who sees themselves as more attractive/sexier than they really are.

[US]College Sl. Research Project (Cal. State Poly. Uni., Pomona) 🌐 Nottie (Notty) (noun and adj.) A person who thinks they’re a hotty, but they aren’t.