If your hair is straight, you simply can’t go wrong with a bob. Bobby Eliot, celebrity hairstylist and Shark global ambassador, especially loves a blunt bob. “Anything blunt is amazing for straight hair,” says Eliot. The hard stop helps to create the illusion of fullness. A-line bobRobin L Marshall/Getty ImagesAn A-line cut is super modern and cool, but on pin-straight hair, that gradual progression of short to long ends at the back looks extra dramatic.