Originally Posted by GAIVS IVLIVS CAESAR
The correct pronunciation is Mee-Leh-zeem
This is they way it is pronounced, now depending on where you are from in France, the accented é could either be pronounced as e in 'peck', or, e as in there. I say it closer to the e in there, but never harsh; in french we don't stress any of the syllables in a word.
Also, most SA's do not know the correct pronunciation for the products. When I worked with Dior, the trainer told the whole group "With the exception of Francoise and Gabrielle, please just say the names in english, you WILL mispronounce it. Just leave the french pronunciation to the two french women." It was funny, she explained the difference between Poison, and poisson, and had me say the two words. When no one could tell the difference, she said that is why they should just use english.