You have to like their page to get to the contest application.
http://www.facebook.com/kohls?sk=app_148493181879011 this is the link to the contest. I had trouble with it just going to the wall, so if it does not work you may have to try a few times or wait a few minutes.
I was going to put the info down, but it won't go to the official rules part and is still not working right. To enter, you have to have a picture of your mom and say why she is the best, or brag about them.