Mass-size relation estimated for E-SDGs. Symbols are coloured according to their B/T ratio. The medians of the observations from ATLAS^3D (black line; the first and third quartiles are shown as shadowed region) and the observed relations for ETGs reported by Mosleh et al. (2013, solid magenta line) and Bernardi et al. (2014, dashed blue line) are included for comparison. See Appendix B for the non-smoothed distribution.