The It Bag Formula: How Four Ingredients Turn a Handbag Into a Cultural Icon

What separates a genuine It Bag from a merely popular purse is not price and not even beauty—it is a repeatable formula. Look across fashion history, from the Hermès Kelly to the Fendi Baguette, and the same four components appear every time: a design that stands alone in silhouette, an association with a famous face or cultural moment, media amplification, and a story the buyer wants to inhabit. That is my argument, but it is also what the historical record keeps showing. Once you see the pattern, you cannot unsee it.

The 'It Bag' Phenomenon: An Introduction

The term itself is younger than the objects it describes. As Wikipedia's encyclopedia entry on the phenomenon records, an it bag is a high-priced designer handbag that becomes a popular best-seller, and the label was coined in the 1990s alongside the explosive growth of the handbag market. In that era, designers competed to produce a single, easily recognisable design which—cleverly marketed, endorsed by the fashion press, or seen on a celebrity—would become that season's must-have.

But the ingredients predate the name by decades. One of the first designers credited with creating the concept of the easily identifiable "status bag" was Giuliana Camerino, founder in 1945 of the Venetian house Roberta di Camerino. Her bags were instantly recognisable through artisan-made hardware and her distinctive use of fabrics formerly reserved for clothing—innovations that included 1946 bags patterned with a trellis of R's, woven-leather bags in 1957, and a 1964 handbag with a unique articulated frame later taken up by Prada. Meanwhile, Hermès, Chanel and Louis Vuitton had created handbags famous in their own right well before the concept took hold. The pattern—distinctive design plus a famous name—was already running before anyone gave it a title.

The It Bag Formula: A Framework for Iconic Status

Here is the framework I want collectors and fashion historians to actually use. Read any handbag's history through these four components, and you can diagnose whether it has—or could achieve—genuine It Bag status. The first determinant, as Amy de Klerk writes at Harper's BAZAAR, "seems indisputable": the bag must be an innovative design. "It can't be too similar to anything that has come before it, and it has to make its own unique statement."

Two of the components deserve emphasis because they are the ones casual observers miss. Cultural association is not mere celebrity endorsement—it is fusion. As de Klerk's reporting notes, some of the most indisputable It Bags reached their level of popularity only by becoming synonymous with—and renamed after—the women who carried them. And psychological appeal is what turns a hit into a legend. "Culture defines and dictates the It bag of the moment," Rachel Glicksberg of resale platform The RealReal told Harper's BAZAAR. The bag is a vessel for a story; the buyer purchases the story as much as the leather.

One more condition sits above all four: the bag must create a moment, an actual hit. Great design means nothing if the bag doesn't become popular. An It Bag, as a Vestiaire Collective spokesperson put it, is "so famous because it is the bag of the season"—while fashion curator Fernandes-Wong adds the crucial qualifier that it must be "part of the zeitgeist." Popularity is the test; the four components are the mechanism.

Case Study: The Hermès Kelly and Birkin

No pair demonstrates cultural association better. In 1935, Hermès created a top-handled leather bag called the sac à dépêches as part of its leather goods range. The design was respected, but it was not the object we know today. In 1956, the bag was prominently worn by Grace Kelly—and promptly renamed the Kelly. That single act of renaming, following a single act of wearing, is the entire cultural-association component compressed into one year. The bag did not change; its story did, and the story is what sold.

Nearly three decades later, Hermès repeated the play with a twist. In 1984, the house modified its Haut à Courroies—a design originally created around 1900—to create a bag for the actress and singer Jane Birkin. The Birkin subsequently became one of the most desirable, widely recognised bags of the 1990s and early 2000s designer-bag craze. Note the layered formula here: an innovative reinterpretation of an existing design, a living celebrity namesake, and a decade of press amplification during the very years the "it bag" term was coined. The Birkin did not ride the craze; it helped define it.

Case Study: The Chanel 2.55

The 2.55 is the purest case of the design component doing the heavy lifting. Coco Chanel created her quilted-leather bag in February 1955—the source of its name, month and year included—long before any marketing apparatus existed to promote it. Its quilted silhouette needed no celebrity to be legible; de Klerk groups it with the Balenciaga City, Dior Saddle, and Fendi Baguette as bags that "truly stand on their own in terms of silhouette."

What I find instructive is the 2.55's independence from the other components. It carries no namesake actress, no single paparazzi moment, no television cameo. Its psychological appeal flows directly from its design innovation and from the Chanel narrative itself—Coco's authorship, the February 1955 date, the quilted code. It proves the formula is weighted, not mechanical: a design strong enough can generate its own story, and the media amplification follows the object rather than creating it.

Case Study: The Fendi Baguette

The Baguette is where all four components converge at maximum velocity—and where the media component visibly accelerates. The bag achieved significant popularity in the 1990s, and de Klerk's history is blunt about the mechanism: "We saw this in the '90s with Sarah Jessica Parker and the Fendi Baguette," as Glicksberg frames it. Carried by Parker—by extension, by Carrie Bradshaw on Sex and the City—the Baguette stopped being a Fendi product and became a character in the era's defining fashion conversation.

What the Baguette adds to the model is timing. It arrived exactly when the "it bag" designation was coined, when designers were competing to produce a single recognisable design that the press could crown as the season's must-have. The Baguette had the innovative silhouette, the celebrity association, and unprecedented broadcast amplification simultaneously. Its presence in popular culture made it the defining It Bag of its era—the clearest proof that the formula works, and that it works faster when media density is higher.

Identifying the Next 'It Bag': What to Watch For

To identify potential future It Bags, fashion historians and collectors should evaluate emerging luxury handbags against the four components of the It Bag Formula. The measurable indicator to track is the consistent presence of innovative design, strong cultural association, widespread media amplification, and a compelling psychological narrative around a new handbag.

Applied practically: when a new silhouette appears, first ask whether it makes its own statement or echoes something prior. Then ask who is carrying it, and whether that association is strong enough to rename the bag itself—the Kelly test. Then watch the speed and reach of its press and social visibility, since social platforms have compressed what once took decades into a single season. Finally, interrogate the story: is there a narrative a buyer wants to wear on their arm?

The historical record rewards this discipline. The bags that endured—the Kelly, the 2.55, the Birkin, the Baguette—each satisfied the formula in their own proportions. That four-part pattern, not any single designer's marketing genius, is the through-line of the phenomenon, and it remains the checklist against which the next would-be icon will be measured.

Sources

• It bag - Wikipedia — EN
• What Makes an It Bag ”It”? — Harper's BAZAAR