Is there a regular foundation you use? I'm a huge fan of Revlon Color Stay, but you could also check out Estee Lauder Double Wear, Tarte (I think they've got a long wearing one), MUFE.. hit up Sephora or Ulta for samples of prestige brands now. That way you can test drive products before your big day. I'd just suggest you find long wearing products so you don't worry about frequent touch ups. What kind of look do you want? Something bridal, like a natural look or glow or maybe something edgier or colorful?