Bloomingdale's is listing it with larger measurements than yours ilovemybags.
Marc Jacobs Classic Carla Leather Tote
16.5"W x 13"H x 4.5"D
4" drop and 11.5" drop
I just returned a MCM Sportivo which was 14 x 9 x 6 (or so Sak's said) and it was overwhelming. But I think I will give the Carla a try. It looks as though it's not too structured and may slouch a bit which will help also. Thank you all for your help!