I just got these shoes in dark brown in a size 39.5 and they are wayy too narrow and just a tad too small for me and I don't think I can wear 4 inchers without a platform in front. These are the two pairs of shoes I need style numbers for (Neiman Marcus). Now size issues, I'm generally a TTS 9 in normal heels (ie. Calvin Klein, Steve Madden etc) and tennis shoes/flats but in Marc Jacobs i'm a 39.5 or a 40. What size in the silverados would you recommend? TIA Ladies! I really appreciate it!