Isabel Marant Renell jeans (source) I’m never the first to jump on the bandwagon for the latest “in” thing, or new trend, as I generally take a while to warm up to things. Sometimes I wish this wasn’t the case, as lately all I’ve been thinking about adding to my small jean collection is these Isabel Marant renell jeans, in black. I’ve been on a rather vigorous hunt for the last two months, with very little luck. Instead, I am continuously taunted by images of stylish ladies such as Geraldine Saglio (above), rocking these incredibly hard to track down jeans.…