Quick! Somebody call the doctor -- we think we might be seeing double. Is it just us, or does 'Shake It Up' actress/singer/dancer Zendaya look a lot like actress/singer/dancer/model Cassie?

When you look at a picture of 14-year-old Zendaya next to this picture of a younger Cassie circa 2006, the girls look like twin sisters! Both of the one-named artists are half African-American, but the Disney teen also has Dutch roots while the 'Me & U' singer is half Chinese, so it's interesting that they still look so similar! Do you agree that Zendaya and Cassie look alike? Cast your vote below.