Fluffy "cut-Out" Sugar Cookies

Have you ever had those sugar cookies at publix that are really fluffy and cake like? Well hear is that recipe. I think its the sour cream that makes it so fluffy. I also roll them out maybe 1/4 in thick and under cook them a little but thats probably a personal preference. They do take a little work just like any cut-out cookies but this is something that anytime I ask someone in our family what I can bring for dessert they always say this! I use my kitchen aid but before that I would use my hand blender as long as I could and then mix the last part of the flour in by hand. Hope you enjoy.