“I’m not a celebrity.” That is one realization that the artist, actress, model and first-time director Julia Fox would like more people to wake up to. After a two-week closet cleanse, Julia Fox will be selling hundreds of her fashion finds Saturday afternoon in TriBeCa, as part of Drafting x eBay ’s stoop sale series. The ready-made style arbiter is parting with 450 pieces, including some of her favorite designer ones and PR freebies. Shoppers can find the goods at 453 Washington Street from 1 to 5 p.m. and online at eBay . A black Alexander Wang coat that she wore for a shoot with Juergen Teller, an Instinct Brand tank and micro-miniskirt “made from trash,” and a blue velvet coat that Fox wore for a night out with Kanye West in 2022 are up for grabs. A portion of the sales are earmarked for Rosebuds Reading Collective, which uses books as a means of healing.…