Office Siren is a fashion microtrend that gained popularity on TikTok in late 2023 and early 2024. The aesthetic is a stylized and sensual reinterpretation of 1990s and early 2000s corporate fashion, blending sleek professionalism with a mysterious and alluring edge.

It draws inspiration from the " power dressing " of previous decades, the minimalist designs of brands like Calvin Klein and Prada, and the on-screen style of characters like Gisele Bündchen's role as Serena in The Devil Wears Prada .

The look is defined by a specific formula: a muted, neutral color palette, form-fitting silhouettes, and the signature accessory of narrow, rectangular eyeglasses, often referred to as "Bayonetta glasses." The "siren" archetype is portrayed as an ambitious, intelligent, and confident woman who uses her sharp style as a form of power. The aesthetic is often considered a form of escapism or role-play, particularly for a younger generation romanticizing a version of corporate life they have not experienced.

The Office Siren aesthetic was codified and named on TikTok, but its visual influences are rooted in the late 20th and early 21st centuries. The sleek, minimalist, and subtly sensual corporate wear from 1990s and 2000s collections by designers like Tom Ford for Gucci, Dolce & Gabbana, and Ralph Lauren serve as a primary inspiration. This look was famously immortalized on-screen by characters like Serena (played by Gisele Bündchen) in the 2006 film The Devil Wears Prada , whose wardrobe became a key reference point for the trend.

In the 2020s, the street style of models like Bella Hadid, who frequently wears vintage 90s and 2000s pieces, including the narrow glasses that became central to the look, helped bring the aesthetic into the modern consciousness. The trend was further fueled by contemporary runway collections, particularly Miu Miu's Fall/Winter 2023 show, which playfully combined bookish, librarian-esque pieces with sensual elements like sheer skirts. The term itself was popularized on TikTok, where creators began to assemble these influences into a cohesive aesthetic, giving it names like "Office Siren" and the video game-inspired "Bayonettacore."

The term "Office Siren" was specifically coined by fashion student and TikTok creator Asia Bieuville. In a viral video that helped codify the look, she summarized its influences by stating, "She's '90s and 2000s Calvin Klein archive, Dolce & Gabbana, Versace and Ralph Lauren. She's the office siren." Her video also helped popularize the term "Bayonetta glasses."

The Office Siren look is built on a specific and consistent formula that balances professional attire with alluring details. The aesthetic is not typically intended for actual corporate environments, but rather as a stylized look for social settings.

In terms of styling, the balance of professionalism and sexiness varies, but both motifs must be present. For example, an outfit may show no skin, but the silhouette is more form-fitting and the hair and make-up can be more tousled. Alternatively, a going-out outfit may show cleavage, but a blazer and neat hair serves as contrast.

The primary element of the fashion is a sleek, form-fitting silhouette. Key garments include tailored pencil skirts, fitted button-down shirts (often left partially unbuttoned), and tight knit tops with various necklines like turtlenecks or boat necks. The overall look is structured and polished, but always body-conscious. The color palette is strictly neutral, consisting of black, grey, cream, and sandy browns, with occasional accents of deep red or leopard print.

Accessories are essential for completing the Office Siren look. The single most defining item is a pair of narrow, rectangular eyeglasses, nicknamed "Bayonetta glasses" after the titular video game character. Footwear is almost exclusively heeled, favoring stilettos, kitten heels, or pointed-toe boots. Jewelry is typically minimal and classic, such as simple silver chokers or pearl earrings. A structured shoulder bag in black or a muted accent color is the preferred choice of bag.

The makeup and hair are similarly sleek and refined. Makeup is generally subdued and classic, often featuring a neutral, matte complexion with a defined contour. Eyes might have a sharp cat-eye liner or a perfected smoky look in cool-toned grays, while lips are either kept simple with a darker liner and gloss or made a statement with a classic red or deep black-cherry lipstick. Hair is typically styled in a sleek, polished manner, such as a neat bun, a sharp bob, or a voluminous blowout.

The Office Siren trend has drawn criticism, particularly from HR professionals and those with experience in corporate environments. Commentators have noted that many of the outfits promoted under the trend—featuring very short skirts, visible lingerie elements like thigh-high stockings, and deep necklines—would be considered violations of professional dress codes in most actual offices. The aesthetic is therefore often framed as a fantasy or "corporate cosplay" rather than a practical guide to workplace attire.