fetch, adj. — Green’s Dictionary of Slang

fetch adj.

[abbr. SE fetching; seemingly from movie Mean Girls (2004)]

(US campus) charming, attractive.

2004		T. Fey Mean Girls [movie script] - Oh, my God, I love your bracelet. - [...] - It’s adorable. - Oh, it’s so fetch. - What is ‘fetch’? - Oh, it’s, like, slang. From England.
2012		C. Eble UNC-CH Campus Sl. 2011 4: FETCH — stylish, attractive: ‘Your new haircut is so fetch.’.
2016		C. Eble UNC-CH Campus Sl. Spring 2016.