ladies with good fashion sense!!! HELPPP

So we have a wedding next week and i got myself & my son outfits. his turned out precious but mine was just the wrong color and too big and just overall horrible. what would you guys wear to match little dude. i’m gonna attach his outfit below. preferable from amazon and something i can easily breast feed in. fall colors, it’s in tennessee. so maybe something long sleeve? idk please someone help lol