I am 5'7, size 10, and have bought this dress
It's a family do (very much looking forward to it) and our ds' (5yrs & 3yrs) will be there as well.
I've got my eyes on these in the champagne (much nicer in the flesh, and v comfy)
However, dh made a passing comment about wearing heels to a wedding, and it's making me wonder if flats are not smart enough.
If it helps, wedding is being held in hotel (service, reception etc) and quite traditional.