Oliberte black flats

Extremely sad these don’t fit me! I just received them from Poshmark but they turned out way too big. I am a 10/41 but these are huge on me! (See photo) I put 11 as the size because someone with that size foot needs to have these. They are so cute! I paid $40 with shipping and never wore them. Again, the shoes are supposedly a size 10 but they must be mismarked bc they are more like 11s.