We're going to let you in on a big Hollywood hair secret — extensions. Oh, you love Lea Michele's thick, luscious locks? They're clip-in extensions. Wish you could swing your strands à la Beyoncé? It's a sew-in weave. We don't mean to give it all away, but it's time someone told the truth! We understand the need for all the smoke and mirrors. If we had to do two-a-day shows or red carpet appearances, we'd want a little hair help, too. But you don't need a team of celebrity hairstylists to get a long, full mane. You can get Katy Perry's phony-pony style at home. And we promise it won't look superfake if you follow these tips. Warning: the secret will be out once you're back to your short hairdo tomorrow.