I too was thinking of the Estrela MM. It was the only actual shoulder bag with a (thin) cross-body strap. I was looking for a "cool" mommy bag. Tried it on at least three times and ended up getting the DE Diane, a bucket bag with a single wide strap that adjusts to be shoulder carried or cross body. The Estrela is a nice large bag, but it'll probably get heavy for cross-body carry when full. If I need to tote a lot, I throw everything into my Longchamp. Have you considered the Palermo PM?