LanvinSlim-Fit Jeans, Blue DetailsSlim-fit denim. Five-pocket style. Slim, straight legs. Button/zip fly; belt loops. Cotton. Made in Italy. Designer About Lanvin: Lanvin is the oldest French house of fashion still creating collections. Founded by Jeanne Lanvin as a millinery on Faubourg Saint-Honore in 1889 Paris, the company earned a following among French socialites. Today, critically acclaimed designer Alber Elbaz upholds the Lanvin tradition of supremely well-made clothes, adding shoes, handbags, jewelry and accessories to the collection.