Effects of a pure size evolution of the form R_e ∝ (1 + z)^b with b = − 0.53 applied to the 16 cluster ETGs at z = 1.27. In the left panel the resulting Kormendy relation evolved to z = 0 (red filled circles and red line) is compared to the local one (black line). The middle and right panels are similar to the lower panels of Fig. 5: they show the distributions of the evolved effective radii of the 16 ETGs (red histogram) and of the WINGS galaxies selected in the same luminosity range (−21 <M_B< −17; left panel) and stellar mass range (5 × 10¹⁰ M_⊙< ℳ_∗< 2 × 10¹¹ M_⊙; right). The effective radii have been computed using GASPHOT as for the WINGS sample.