Style.com from whence these photos come doesn't even have any design notes or historical analogies.
The buttons and loops here running down the front of the coat are now a key Dior feature, but were introduced by John Galliano when he joined the House.
Galliano was fired and replaced by Raf Simons, who initially seemed shockingly minimalist and modern. Several seasons in Simons has proven himself to be a worthy successor to both Christian Dior and Galliano, paying tribute to their silhouettes and little trademarks whilst revolutionizing a brand that had become debased when their 'ironic' 'trashy' pieces and looks were taken up wholesale by WAGs.
Simons has brought the brand back and shown us he deserves his place in fashion.
This Ottoman style dress shows nicely how the rows of buttons and loops are as associated today with the Near East and North Africa. The embroidered pockets and flared tulip sleeves save it from being too like a piece one can pick up in a souk.
Quick disclaimer - no affiliate links, but I've worn Dior for years, sometimes thanks to the generosity of LVMH.