Jessica Biel's Early-2000s Cool Girl Style Is Still Inspiring Us Today

Jessica Biel is one of Hollywood's leading women, and the actor had her big break at 14, when she was cast in the family TV drama "7th Heaven in 1996."Cut to the early-2000s, and Biel was a Hollywood it-girl getting significant attention not just for her acting, but also for her signature Y2K style. Since then, the actor has undergone a sleek style transformation that's left her clad in couture, not to mention her gorgeous hair evolution — Jessica Biel's blunt bob was THE summer haircut in 2024. However, in the early aughts, Biel's go-to for dressing to impress was a pair of bootcut jeans.

In 2023, the actor recognized the return of vintage Y2K style by posting a throwback carousel of her outfits from back in the day on Instagram. "I hear all of these outfits are cool again," she wrote. "Love that for me because I was worried they were questionable the first time."

In recent years, as new generations revive old fads, Biel has become a familiar face and inspiration behind the returning Y2K trends. From double denim and low-waisted jeans to open-toe heels and Western-inspired accents, the actor has showcased her versatile personal style. With a string of memorable looks behind her, Biel has maintained her reputation as a style icon.

In 2001, Jessica Biel wore a glamorous yet refined look to the "Summer Catch" premiere. The flattering light-blue turtleneck dress clung to her frame perfectly, and Biel's matching metallic blue peep-toe heels also made a mark. The higher neckline is another Y2K trend that has slowly been making its way back, and we saw Hailey Bieber rock a similar frock in 2025. Her version of the baby-blue dress featured a boat neck, and like Biel, Bieber threw on a pair of peep-toe heels, which have become a symbol of regal femininity .

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In late 2001, Jessica Biel attended the My VH-1 Music Awards wearing another stylish but low-key ensemble. Biel's monochromatic beige outfit featured flared trousers and a knit turtleneck tank top. This was relatively casual attire to wear on the red carpet, but by sticking with a single chic shade of beige, the outfit feels more sophisticated. In recent years, monochromatic beige outfits have returned — just look at fashion icons Kim and Khloé Kardashian in 2026. 

Double denim may be a controversial pairing, but it's no secret that the Canadian tuxedo made for some of the most iconic 2000s red-carpet looks (like Britney Spears and Justin Timberlake's unforgettable Canadian tuxedo moment). In 2002, Jessica Biel embraced the trend with ease at the Max Awards. While the era's obsession with over-accessorizing often dominated celebrity outfits (surprise, surprise), the actor opted for a relaxed ensemble. Biel's effortless outfit proved she was an expert at adapting trends to her personal style. She chose wisely, as double denim has seen a resurgence in recent years, like this outfit Bella Hadid wore in 2026.

Jessica Biel's hair underwent a drastic change in 2002. At "The Rules of Attraction" premiere, the actor showcased her new style, featuring a deep side fringe and an eye-catching auburn color. Biel may not have known that her new hair color (expertly complemented with a leather jacket in a similar shade) would make such an impact, but it's a hue that celebs still turn to when they want to make a statement. In 2022, Kendall Jenner made a similar splash with auburn locks, though she kept hers lighter and more ginger-y.

Jessica Biel embraced a Western edge at the Allure Magazine Annual Dinner Party in 2003. Dressed in low-waist, flared khakis and a cropped white button-up shirt, the actor gave the impression that she could be on her way to a rodeo after the event. While the dark navy cuffs on her shirt contrasted with the rest of her light outfit, her statement brown belt added an extra cowgirl-inspired flair to her ensemble. Biel seemed ahead of supermodel Bella Hadid, who wore a similar style in 2024, though with the Western influence dialed way up.

In 2004, while out and about in Los Angeles, Jessica Biel wore one of the most quintessential outfits of the era: low-waist bootcut jeans with a striped, cropped polo shirt. Back then, Biel was more inclined to keep her looks casual, though that doesn't mean they weren't fashionable. In recent years, stripes have returned as a popular pattern, and polo shirts are also back on trend — though with some different styling. During New York Fashion Week in 2025, model Iris Law embraced Biel's striped polo shirt, but this version featured just a few bold accent stripes and a baggier fit.

At the Annual Lingerie Art & Fashion Show in 2004, Jessica Biel used her trendy pants and brown leather jacket to add a grunge edge to her ensemble. Biel's dramatically distressed jeans nodded to the evolution of grunge style at the time, which was more polished than the '90s version of the trend. Even in recent years, celebrities still return to grunge fashion, and in 2020, Margot Robbie found the right balance of effortless and deliberate, just like Biel did all those years ago. Pairing a light shade of denim pants (looser fitting than Biel's) with a dark coat and casual top gave Robbie that perfect cool girl look.

Jessica Biel ended 2004 with a casual ensemble that merged vintage glamor and country style. When Biel appeared on MTV's "Total Request Live," she arrived on set wearing her usual slightly Western-inspired flared jeans, belt, and casual top, but topped off the look with a striking dark-blue velour jacket with a distinctive military style. This Napoleonic-inspired jacket has seen a boost in popularity, and Margot Robbie was seen rocking a gold-embellished version at an event in 2026. The tailored cut of her jacket and circular shoulder pads put Biel way ahead of the trend. Though the red flags in Jessica Biel's marriage to Justin Timberlake may make more headlines these days, there's no denying her versatile 2000s wardrobe was flawless.