After Akris, Paris, March 2012. 
Crisp white and navy — you can't go wrong with this classic, elegant combination. 
Recreate her look (kind of):
White pants: Tess Giberson slouchy trousers, Alice + Olivia Eric pants , Sandro straight leg pants, Altuzarra Woodland crepe wide-leg trousers
Altuzarra white ruffled blouse,   Joie Marru top, Alexander McQueen silk creponne blouse, Elizabeth and James Jamie pussy bow blouse
Add a long-line statement jacket/coat: Stella McCartney Ray printed jacket, Miu Miu printed cotton twill coat, J. Crew Gondola striped coat, Christopher Kane floral brocade coat or ASOS zig zag coat