What dress was Charlize Theron wearing in Dior commercial?

i was looking for it as well, because it's just so gorgeous, and i was informed that it was probably a custom dior creation, as no one can find any trace of it/others anywhere! and the most possible way of obtaining one would be through actually getting one made, like a replica because if that dress was available to buy, being obvs one of very few created/on tv as well, the price would be really really high

sorry, not much help, i want to find out myself!