Size–stellar mass relation for elliptical galaxies. The different symbols are as follows: red circles are our 16 cluster ellipticals at z = 1.27 (filled circles represent the R_e derived using GASPHOT consistently with the WINGS sample, open circles are those derived with GALFIT); blue filled triangles are field ellipticals selected from the sample of Saracco et al. (2010, Sar10) at 1.1 <z< 1.5, crosses are local cluster ellipticals selected from the WINGS survey, and open squares are the local high-mass cluster ellipticals with σ_v> 330 km s^-1 selected by Bernardi et al. (2008, hereafter Ber08).