There’s a scene in Father of the Bride (the Steve Martin one) where the bride, Annie, is ready to go to the church and she shows her dad her shoes underneath her full skirt -- they’re white sneakers with ribbons and bows. Her father owns a sneaker factory and had them made special for her.
You can wear any comfortable shoes you want -- ballet flats, flip-flops, decorative sneakers or even Crocs -- but remember that you’ll be dancing at your reception so you want to choose a pair of shoes that will stay on your feet as you twirl around the dancefloor.
It’s up to you if you want to wear a pair of stylish pumps for the purpose of a few photos for the album or wear comfy shoes all day and night.
If your wedding shoes will show because of the hem of your dress I would recommend choosing a stylish pair of comfortable shoes and forgoing the flip-flops or Crocs, except maybe if you’re getting married on the beach.