How are fashion brands pronounced in Italian?

After the meeting between Donald Trump and Bernard Arnault, CEO and president of LVMH, the web went wild for the video in which the president of the United States pronounced in Anglo-French "Louis Vooton".
It often happens that the names of fashion brands are crippled, so much so that the brands themselves intervene, Donatella Versace knows best. For FW18 campaign, in a video with Kaia Gerber, Bella Hadid and Vittoria Ceretti, she decided to make it clear what is the exact pronunciation of her name: "Versace not Versachy".
If the pronounciation for Versace may seem simple for the Italians, how are the names of Walter Van Beirendonck and Ann Demeulemeester pronounced in Belgium? The designers who besides being part of the famous "6 of Antwerp" also have in common unpronounceable surnames.
How are some of the most important fashion brands pronounced in Italy? The graphic designer Davide Perella and nss magazine tried to make everything a little clearer.