double strap mules / heels

I bought these because the original seller said that these shoes run several sizes smaller (I am a size 7), but I found that it’s closer to a true US size 8/8.5/9 depending on how wide your feet are. This double strap style is super popular right now (see Charles & Keith, Urban Outfitters, oak + fort, etc.) and I’m bummed that it’s too big for me. The shoes are brand new, I’ve only tried them on.