“Vintage” “boutique” gray comfy overalls

Tag says 4T but feel like 3T. I extended the straps but they go shorter too. SO MANY COMPLIMENTS each time we wore this and everyone asked where they were from. OLD NAVY! I’ve never been able to find them there or H&M. These are from YEARS ago; bought from someone else. Wish we could’ve worn longer. Each time I got asked where I got them, everyone assumed a boutique. Look so sweet on with a long sleeve T under.