The 'ui' is pronounced like a 'w'.
Louis Vuitton is one of the world's leading international fashion houses; it sells its products through standalone boutiques, lease departments in high-end department stores, and through the e-commerce section of its website.
Use the same light, delicate R sound as in "Damier" to end the word, rather than a hard English R.
The first one is the traditional french pronunciation, while the second is of English origin.
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The third syllable, "col", sounds like "coal.