With fall officially starting this week, I took a look at recent celebrity street style photos to find the easiest outfit formulas to re-create on a budget.

In Los Angeles , Hailey Bieber was seen in a leopard-print slip dress with kitten-heel sandals , and Zendaya wore a one-shoulder tank top, a midi skirt, and vintage Prada boots.

Over in New York , where temperatures have started cooling off, Emily Ratajkowski wore an outfit formula that felt particularly fall, pairing a boatneck top with corduroy pants and Classic Ultra Mini Uggs. Dakota Johnson was in slouchy knitwear with a midi skirt and pointed-toe kitten heels , and Zoë Kravitz went for an all-black look that included a tank top, a knee-length skirt , and ballet flats .

Ahead, each outfit is broken down item by item, with buys from brands like Frankies Bikinis , Vagabond, Flore Flore, Cou Cou , and more.

Bieber went to dinner in L.A. in a vintage leopard-print Roberto Cavalli dress and vintage Manolo Blahnik kitten-heel sandals.

Also in L.A., Zendaya went to an art gallery wearing vintage Prada boots from the F/W 99 collection. For a similar-looking pair, there are the under-$300 Vagabond Sky Boots.

Currently on a press tour for her psychological thriller Verity , Johnson wore an almost all-black look (slouchy knitwear and a maxi skirt), aside from cream pointed-toe kitten heels.

Leaving a farmers market in Brooklyn, Ratajkowski was in Ugg Classic Ultra Mini Boots in Chestnut. She also wore a boatneck top , which associate shopping director Judith Jones recently covered, calling it "the elegant top every chic fashion person I know is wearing right now."

Kravitz wore a monochromatic outfit you can wear on repeat: a tank top, a slip skirt, and ballet flats, accessorized with oversize sunglasses .