While this is not normal it isn't a terrible thing, my son also has the problem. It tends to be genitic, so if you or your husband have or had a crowding problem,it's very likely that your children will. I have a v-shaped crowding problem on my bottom front teeth, i can tell you it's never hurt me, just made me smile differently to hide it.
A dentist that I spoke with about this problem said that the best you can do about it is to start saving to braces now cause that's what it's going to take to fix the problem.
Hope this helps and makes you feel a little better.
S