They are really look alike. And I like BOTH!
However, when I noticed further on the bag sizes, Jil Sander bag (L39 x H20 x D17 cm) has bigger dimensions than Prada's (L33 x H23.5 x D14.5 cm).
So, given my small/petite frame, I think the one from Prada will suit me better.
Should I put this bag (the Prada one) on my bag wishlist? *think think think*
Jil Sander GBP1,187
source: NAP and Prada