I always wondered why I had an awful latch with Aaron breastfeeding, I always felt it wasn't right and he never got a 'mouthful' at every feed...and now I know a possible reason why. Now my SIL had the exact same thing...if you see pics of Aaron you can see how thin his top lip is. If I turn up his top lip it's basically joined/fused with a bit of skin and gum and he has a big bit of gum between his two front teeth too. My SIL actually had to get hers cut and had special braces to bring her teeth together. My girls had big gaps at first but didn't have the skin/gum thing happening like Aaron. It's nothing dramatic for Aaron, it's purely cosmetic but it explains why he could never get his top lip over (and why I was so sore all the time feeding, even after so long...and probably another reason added to a supply issue because he couldn't stimulate the breast enough.) Anyway, there's a bit of info for you!