i bought my large muse 3 weeks ago and the SA told me that the stitches in the bag (the large stitches that form the Y) will come loose in time. she said it's normal and that i shouldn't worry about it, since those stitches doesn't really hold the bag/leather together and are just details of the bag. besides, i can bring it to YSL anytime to have it repaired. i didnt mind then, but i didnt know it'll happen this soon! one of the stitches started getting loose already and i have to push it back to the hole all the time!