probably shocked some fans when she debuted her new appearance with her mouth full of braces in a new video. The "I Knew You Were Trouble" singer looks unrecognizable as she plays a girl named Natalie in the 42-second clip titled "Ew! It's Natalie!" to promote her upcoming appearance on "".
"Hey Sara, it's Natalie," the pop/country star says in the clip, referring to 's character from his "Ew!" skit. "Our moms were best friends together in college. So I'm really excited because my mom said that we're going to come visit you and your mom and your dad, and um, I heard that you have that television show called 'Ew!' and so that maybe I could be on it, was what I was thinking."