In the past, M Girls have been shocked to find out that stars like Bella Thorne — see the pics of her new boyfriend HERE! — and even Demi Lovato don't go by their real first names. But they aren't the only stars with mystery surrounding their names. Have you ever wondered about celebrities that only go by one? You know, like Rihanna and Kesha? What are their LAST names?
We're putting your celebrity knowledge to the test with our latest guessing game that challenges YOU to match the star to their real last name. Do you think you can handle it? Guess we'll see once you click all the way through the gallery...
Here's how it works: We'll give you a celeb, then it's your job to make a guess. Click the arrow to reveal the answer, then once you're done clicking through, comment below letting us know what your score is!