What is the correct pronounciation for 'Givenchy'?

I always pronounced it "gee-vin-chee" but Wikipedia says it is pronounced "gee-von-shee"|||Hard "g" Gee-von-shay|||gee-vahn-chee|||are you sure that's a word??? lol i would think you would say it like: jiv en chee...that's just how i would say it