In the last few seasons, stars have chopped their locks left and right. It makes sense considering "lengths that are at the collarbone are very in," says celebrity hairstylist John Ruggiero, who works with Chrissy Teigen, Gigi Hadid, and Rashida Jones, among others. "It’s fresh and clean. I don’t know if I should say this, but I'm so tired of long hair. It's refreshing when I see someone have a bob, or girls who were known for their really long hair cutting it like Kim Kardashian." As for the ever-confusing question of what exactly constitutes bobs and lobs, Ruggiero says the former, "to me, is anything that is at the jawline and above. A lob is anything from the jawline to the shoulder—to me it’s almost like a grown out bob." What’s definitely not a lob? "As soon as the hair gets caught on the shoulder it gets out of lob realm," says the super stylist. "If it goes behind your shoulder it’s out of the whole bob domain."