Capellini is a long, thin, cylindrical Italian pasta that originated in northern Italy during the Renaissance. The name translates to “little hairs” in Italian, which is fitting for the pasta’s delicate, hair-like strands. Capellini is similar in shape to spaghetti, but is about a third of its thickness, with a diameter of 0.85–0.92 millimeters. It’s often compared to angel hair pasta, which is even thinner, with a diameter of 0.78–0.88 millimeters