Abstract: Frieze patterns were studied by Conway and Coxeter in the 1970s. More recently, in 2015, Baur, Parsons, and Tschabold introduced infinite friezes and related them to the once-punctured disk and annulus. In this 30-minute virtual talk, we will explain the connection between periodic infinite friezes and cluster algebras of type D and affine A (modeled by once-punctured disks and annuli, respectively). We will discuss an invariant called growth coefficients which correspond to bracelets on the surface.