How many times have you seen celebs go from a cute bob to long, luscious locks practically overnight and wished you could do it, too? Well, with hair extensions — pieces added to your natural hair to enhance length, volume, density or even color — you can transform your look with the snap of a finger, says Brandon Wagner, stylist at Tribeca Salon in Tampa, Florida. Don't know where to begin? Follow this handy guide on all things hair extensions to learn everything you need to know about choosing the right extensions and maintaining them to create a celeb-worthy look.