M/M Paris are known for designing their own custom type. That being said, this could be retail of course. I for one don't know what it could be.

Reminds me a bit of Mata Hari and Solstice.

Better late than never: it's Carine by M/M. They created this Typeface for their redesign of the french Vogue:
http://www.frieze.com/issue/article/new_faces/