Relation between the radius of the σ-drop or σ-plateau and the effective radius of the photometric bulge. Filled and empty circles represent classical bulges with a drop or a plateau. Filled and empty stars represent pseudobulges with a drop or a plateau, respectively. A comprehensive description of the bulge classification for each galaxy is shown in Appendix A. The solid and dotted lines show both the one-to-one and two-to-one relations