Several new variants of the Bugatti Chiron launched over the last years, from the record-breaking Bugatti Chiron Super Sport 300+ to the track-focused Bugatti Chiron Pur Sport and special coachbuilt editions like the Bugatti Divo, Bugatti Centodieci and Bugatti La Voiture Noir.

But four years after the Chiron launched, Bugatti still hasn't launched a topless roadster version as a successor to the Bugatti Veyron Grand Sport. Bugatti has already said it has no plans to build a Chiron roadster, but we were skeptical. Now, sources have told The Supercar Blog that a Bugatti Chiron roadster is finally happening for one special customer.

Details are scarce, but the open-top Bugatti Chiron is reportedly being offered to customers as a special one-off project. As you would expect, it will be a lot more expensive than the standard Chiron, which already starts at a whopping $3 million.

According to The Supercar Blog's sources, the Bugatti Chiron roadster (the final name hasn't been confirmed) will cost €9 million before taxes - that's around $10 million, which would make the open-top Chiron even more expensive than the $9-million Bugatti Centodieci. This won't make it the most expensive Bugatti ever, however - that title belongs to the Bugatti La Voiture Noir, which sold for $18 million.

Like the standard car, the Bugatti Chiron roadster will be powered by an 8.0-liter, 16-cylinder quad-turbo engine, which produces 1,500 horsepower in the standard Chiron. This would make the open-top Chiron one of the fastest convertibles ever made. The high asking price and limited production also suggest this will be something more special than a roofless Chiron.

Potentially, it could be a speedster version with bespoke styling and a wraparound windshield inspired by the Veyron Barchetta concept that never went into production. Production of the Veyron Grand Sport was limited to 150 units, but we're expecting the open-top Chiron to be much rarer.