Baguette: This long, barrow French bread is pronounced "ba-get."
C'est la vie: This is a phrase which means "such is life" and is used to downplay a disappointment. You pronounce it as "say-la-vee."
Faux pas: A faux pas is a mistake in etiquette or conduct. It is pronounced "foe-pah."
Chic: Chic is a word we often use in English to describe something stylish, and it's pronounced "sheek" not "chick."
Haute couture: Haute couture is basically high fashion. You pronounce it as "oat-koo-tuur."
Avant-garde: Avant-garde is a term often used to describe something unorthodox or experimental. It's used a lot as a description in the fashion industry. You should pronounce it "ah-von-gahd."
Eau de toilette: You'll see this phrase on most perfumes, or "eau de parfum" for stronger fragrances. You should pronounce it as "oh-do-toy-let."
Cache: Cache means a hiding place or anything that's being hidden. Since it doesn't end with an accented "e," you should pronounce this word as "kash," not "kashay."