Lewk: "Lewk" is a variation of "look," a signature physical trait, or a specially and carefully constructed outfit or appearance. Their dress at prom was a lewk.
What is a LEWK?
To use the term of art, a lewk is a personal style signature so individual it's almost indivisible from you. It connotes something noticeable: wearing jeans every day isn't a lewk, but wearing a Schiaparelli lobster hat might be. It might be something you wear every day, but is not the same thing as a uniform.
Why do people spell look LEWK?
Lewk takes the common word look and tweaks the spelling to encourage a pronunciation closer to the man's name Luke. (There's not much precedent for phonetic comparison, however; the only word ending in –ewk in Merriam-Webster Unabridged is Beetewk, a Russian breed of draft horse.)