I found this via being red (thanks for the comment yesterday "red" - I really like your blog!).
For us "lay-men" - a tutorial on designer pronunciation!
Here are some of the ones I hear mispronounced most often:
Zegna: ZANE-ya
Moschino: mo-SKEEN-o
Hermès: AIR-mehz
Givenchy: Zshee-VON-she
(Pronunciations and artwork via ValetMag)
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What's your favorite?