Okay, ladies (and others), here is my opinion--YSL on 57th Street NYC now has both sizes in--this is nothing like the Muse and nothing like the photo. In the photo (from Saks.com) the Rive Gauche looks like a structured bag. However, though it has some hardware overlap with the Muse, the Rive Gauche is not a structured bag--the ones I saw were much squishier than the Muse. The leather flops more (not as squishy as Balenciaga, but definitely going more in that direction, especially the larger size, which is the one in the Saks photo). Also, the leather looked somewhat less textured than the Muse--flatter (maybe that was just the ones they had on display). I didn't like it at all and until I saw it, I was thinking of getting one. The small one just looked--rotund and stuffed. The larger Rive Gauche looked like a Muse trying to transform itself into a Balenciaga bag. I don't think this one is going to take off in quite the same way that the Muse has.