After Taylor Swift was the ultimate adorable girlfriend and SHOCKED THE NATION AND THE WORLD (read: we're partial to a bit of exaggeration, aren't we?) when she thanked Calvin Harris using his real name at the iHeart Music Awards, we've been thinking about all the famous types with stage names.
Because so many household celebrities do use fake names, don't they? Take this lot for example - who although you might know like the back of your hands when they're in the limelight - do you know them by their real names?
Time to find out, and give us a tweet at the usual place when you're done to let us know how you did. LEGGO LEGGO: