Luxury brands often use hand painted images to promote their products. The images are unique and exude a kind of luxury associated with the brand.
Using hand-painted images in advertising also has the advantage of adding a certain charm and personal touch. Unlike digital images or photographs that are easier to reproduce, hand painted images are unique and have a certain imperfection that makes them more authentic and human.
An interesting article about the use of hand-painted murals at Kevani was published at FashionUnited.