Hermès Kelly Bag vs Birkin: Price, History and How the Shapes Are Protected

The Hermès Kelly bag and the Birkin sit side by side in boutique windows and auction catalogues, cost about the same new, and are copied by the same counterfeiters. They are still different bags with different histories, and Hermès protects their shapes in different ways in different countries. This guide compares the two on design, price and history, then explains the legal tools Hermès uses to stop copies: a US registration for the Birkin’s shape, copyright in France, 3D trade marks in Europe, and the MetaBirkins verdict that carried that protection into the digital world.

Short answer: The Kelly is the older bag: a single-handle design developed from Hermès’ 1930s Sac à dépêches and renamed after Grace Kelly in 1977. The Birkin is a larger, two-handle bag made for Jane Birkin in the mid-1980s. In 2026, Sotheby’s reports a Kelly 25 at $13,700 and a Birkin 25 at $13,500 in US boutiques. Hermès protects both shapes through trade marks and copyright.

Key takeaways

• The Kelly has one top handle; the Birkin has two, with a three-lobed flap that fits around them. Both close with a horizontal strap and a lock.
• Reported 2026 US boutique prices start around $11,400 for a Mini Kelly 20 and $13,500 for a Birkin 25, with most Kelly and Birkin sizes between $13,500 and $16,300.
• The Birkin’s shape is a registered US trade mark (Reg. No. 3,936,105), and French courts have held that both the Kelly and Birkin shapes are protected by copyright.
• A New York jury found in 2023 that Mason Rothschild’s MetaBirkins NFTs infringed and diluted Hermès’ marks and awarded $133,000.

What is the difference between a Hermès Kelly bag and a Birkin?

At a glance they share a lot: a flap, a horizontal strap and a lock at the centre. The clearest differences are the handles, the flap and the range of sizes.

Sizes refer to the length of the base in centimetres, so a Kelly 25 is 25cm across, according to Sotheby’s guide to the Kelly. The Sellier and Retourne versions matter to collectors: Sellier Kellys are more rigid and formal, Retourne Kellys softer with slightly more space inside.

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Where did the Kelly and the Birkin come from?

Hermès began as a harness and saddle maker, and the Kelly’s roots are equestrian. Sotheby’s traces it to the Haut à Courroies, a tall bag made to carry riding equipment, which Robert Dumas reworked in the 1930s as the Sac à dépêches. In the 1950s Grace Kelly was photographed carrying the bag, famously holding it in front of her to shield her pregnancy from photographers, and the public began calling it the Kelly. Hermès made the name official in 1977, in honour of the actress who had become Princess of Monaco.

The Birkin is younger. The usual account, repeated by The Art Newspaper, is that Jane Birkin sat next to Hermès chief executive Jean-Louis Dumas on an Air France flight and complained that she could not find a bag that worked for her as a mother. In 1985 Hermès presented her with a prototype and asked permission to name it after her. That original bag sold at Sotheby’s Paris on 10 July 2025 for €8.6 million with fees, the most expensive handbag ever sold at auction, to a collector in Japan.

How much does a Hermès Kelly bag cost compared with a Birkin?

Kellys and Birkins are hard to buy new on demand, so boutique prices are not easy to check. The most reliable public figures come from auction houses that track them. In January 2026, Sotheby’s reported these US retail prices for standard leathers:

Size for size, the two are close at retail. The gap opens on the secondary market, where rare leathers, colours and hardware drive prices. Sotheby’s lists its most expensive Kelly sales as a Kelly 28 Himalaya with diamonds at $425,000 in 2023 and a Kelly 25 Himalaya crocodile at €352,800 in Paris in 2022. Both are a long way below the €8.6 million paid for Jane Birkin’s own bag, which owed its price to provenance rather than materials.

Why Hermès can charge this, and the antitrust lawsuit over how clients get access to these bags, are covered in FLJ’s analysis of the Birkin bag price in 2026. The investment angle is in Birkinonomics.

How does Hermès protect the Birkin shape in the US?

In the US, Hermès International owns a registered trade mark for the configuration of the Birkin itself, Reg. No. 3,936,105, filed in 2009 and registered on 29 March 2011 for handbags. The registration describes a handbag with rectangular sides and bottom, a dimpled triangular profile, a flap with three protruding lobes and two keyhole-shaped openings around the handles, a horizontal strap and a padlock clasp. It also holds a word mark for BIRKIN (Reg. No. 2,991,927).

A shape registration of this kind is trade dress: it protects a product design because consumers have come to recognise it as coming from one maker. That is harder to get than a logo registration, because the owner must show the shape has acquired that recognition and is not functional. Once registered, it lets Hermès sue sellers of lookalikes even when they carry no Hermès name. FLJ’s guide to trade dress in fashion sets out the tests.

What happened in Hermès v Rothschild over the MetaBirkins?

Artist Mason Rothschild sold 100 NFTs called MetaBirkins, digital images of Birkin-style bags, released at a starting price of about $450 each. Hermès sued in the Southern District of New York. Rothschild argued the images were art protected by the First Amendment under the Rogers test. In February 2023 a jury rejected that and found him liable for trademark infringement, trademark dilution and cybersquatting over the MetaBirkins.com domain, awarding Hermès $133,000, as Skadden summarised. Judge Rakoff later granted a permanent injunction.

Rothschild appealed to the Second Circuit. At the time of writing we could not confirm a published decision on the merits of that appeal, so the jury verdict and injunction are the latest settled position we can report. FLJ covered the trial in Hermès wins US trademark trial over MetaBirkins.

How are the Kelly and Birkin protected in Europe?

European courts have given Hermès some of its strongest wins, often relying on copyright as well as trade marks.

• France, 2025 (Paris): on 7 February 2025 the Paris Judicial Court held that the shapes of the Kelly and Birkin are original works protected by copyright, because their features are not dictated solely by function and bear the designer’s personality. It found that “Paisley Jane” bags sold by Blao & Co, and an NFT of them, infringed that copyright and Hermès’ international 3D trade mark for the padlock, registered in 2003. See the EUIPO case summary.
• France, 2025 (Marseille): on 26 June 2025 the Marseille Judicial Court found two Saint-Tropez boutiques liable for selling Kelly imitations, held that the Kelly has been protected by copyright since 1949, found infringement of Hermès’ figurative mark for the closure, and awarded €100,000, according to the EU IP Helpdesk.
• Italy, 2022: on 22 September 2022 the Italian Supreme Court overturned lower court rulings that had questioned the distinctiveness of Hermès’ 3D shape marks for the Birkin and Kelly, stressing that a registration is presumed valid, and sent the case back, as Clifford Chance reported.

The French copyright route matters because it does not depend on proving consumer recognition, and it lasts for the author’s life plus 70 years. A seller who removes every Hermès logo can still infringe if the bag reproduces the protected shape.

What should buyers know about fakes and lookalikes?

Kellys and Birkins are among the most copied bags in the world, and high-end fakes now use good leather and careful stitching. Buy from Hermès or from a reseller with a written authentication guarantee and a refund policy, and be wary of any “new” bag offered far below boutique price. FLJ’s checklist on how to spot counterfeit luxury before buying is a good starting point. Unbranded bags in a similar style are not always illegal, but the French cases show that copying the overall shape can be enough to infringe. For the business story behind Hermès’ scarcity model, the Brand Case Study Pack has a chapter on Hermès and the price of a Birkin.

Frequently asked questions

Which came first, the Kelly or the Birkin?

The Kelly. Its design dates back to Hermès’ 1930s Sac à dépêches and it was renamed the Kelly in 1977. The Birkin was created for Jane Birkin in the mid-1980s, with Hermès presenting her a prototype in 1985.

Is a Kelly more expensive than a Birkin?

At retail they are close. Sotheby’s reports 2026 US prices of $13,700 for a Kelly 25 and $13,500 for a Birkin 25. On resale, exotic leathers and rare colours matter more than the model.

Why is it called the Kelly bag?

After Grace Kelly, who was photographed with the bag in the 1950s, famously using it to shield her pregnancy. Hermès officially adopted the name in 1977.

What is the most expensive Kelly bag sold at auction?

According to Sotheby’s, a Kelly 28 Himalaya with diamonds that sold for $425,000 in 2023. A Kelly 25 Himalaya in crocodile sold for €352,800 in Paris in 2022.

Is the Birkin shape a registered trade mark?

Yes, in the US. Hermès International owns Reg. No. 3,936,105 for the configuration of the bag, registered in 2011 for handbags. French courts have also held the Kelly and Birkin shapes are protected by copyright.

Is it illegal to sell a bag that looks like a Kelly?

It can be. Copying the protected shape or the clasp can infringe trade marks or copyright even without a logo, as Hermès’ 2025 wins in Paris and Marseille show. Bags that only share general features are less likely to infringe.

Prices are as reported by Sotheby’s in January 2026 and may change. This article is general information, not legal advice.

Featured image: Photo: Herry Lawford via Wikimedia Commons, CC BY 2.0, adapted