Belgian model Yumi Lambert, after Barbara Bui, Paris, October 2015.
Adore this look on lovely Yumi! Those cropped self-belt pants are so nice. 
Recreate Yumi's look (kind of):
Print bow/scarf blouse — Valentino pussy bow blouse, Lanvin pussy-bow blouse, ASOS 70's Floral print pussy bow blouse, Free People Modern Muse tie neck long sleeve blouse, or Red Valentino pussy bow chiffon blouse
3.1 Phillip Lim wool and linen tapered pants, Frame Denim Le Skinny paper bag trousers, Theory Lavzin pants, 3.1 Phillip Lim Paperbag waist trousers, Milly Paperbag cropped pleated trousers, Warehouse self-belt utility pants, Brunello Cucinelli pleat front belted jogger pants, or Maison Margiela Karate trousers