Distribution of our BGGs (red stars and large black points) and P98 early-type galaxies (small blue points) in the log r_e vs. log L_Ks plane. The BCGs in the P98 sample are marked by blue open triangles. The solid line represents the best fit to the galaxies in the luminosity range 3 × 10¹⁰ < L_Ks/L_⊙ < 2 × 10¹¹ as done by Bernardi et al. (2011b). Red stars and large black points represent BGGs with ellipticities ϵ > 0.3 and ϵ ≤ 0.3, respectively. The bottom panel represents the residuals from the best fit.