A shag hairstyle should be styled either wavy or straight. A shag hairstyle also looks great with the ends flipped up to accentuate the layers.
Julianne Hough wears her shag on the longer side, and usually in loose waves. Jennifer Lawrence also wears a longer version of the shag hairstyle, with loose waves. Dianna Argon's shag is close to a long bob, but the jagged layers give it the signature shag look.
Shags also work well on shorter hair. Lisa Rinna's shag is her signature style. She has worn this hairstyle consistently for years. Lisa Rinna's shag is short, straight, and flipped on the ends to give it an edgy look. Jane Fonda wears a shag as short as possible to still be considered a shag — just below her hairline in the back and just below the ears on the sides.