Twins

Em: "Mom, will I look like you when I get older?"
Cathie: "Maybe. You look a lot like I did when I was your age."
Em: "Really?"
Cathie: "Yep. I had curly hair just like you"
Em: "Wow! Do you have blue eyes?"
Cathie: "Yep. I do."
Em: "Wow Mom! We're like twins, but you're older. Wait, were you ever in a wedding?"
Cathie: "I don't think I was."
Em: "Oh, then maybe we're not twins."