I felt a pang today when I went into the consignment shop and saw a bunch of my clothes hanging there unsold!
Potential reasons:
1. I have crappy taste (although these are my "pass on" items)
2. Not too much demand for tall/larger sizes (12-14)
3. I have consigned so many items (about 50 pieces in last 6 months), that all I see are the unsold ones, there are probably a lot I have sold already

Anyway, going to do another closet purge and try to sell a bunch more stuff! At worst, if they don't sell, they will be donated.