If you're looking for this kind of dresses,
At Net-a-Porter, you may shop :
This Paneled stretch-jersey dressby Jason Wu
The Sophie two-tone crepe dress by Stella McCartney
The Two-tone rib-paneled silk and wool-blend dress by Victoria Beckham
At Mytheresa :
This stretch knit dress by Stella McCartney
And the TILLY COLOR-BLOCK DRESS by Jason Wu