Top: median p(r) profiles for the galaxies with p(1 R_e) < 0.6 in TNG100 (left) and TNG50 (right). Only bins with more than 10 galaxies are shown. The percentages indicate the fraction of centrally elongated galaxies that populate each median profile. Bottom: distribution of the axis ratio q(5 R_e) in the centrally elongated galaxies of TNG100 (left) and TNG50 (right). Dashed and dotted vertical lines show the mean and the median of the distributions, respectively. The galaxies with p(1 R_e) < 0.6 have elongated shapes up to ∼3 − 4 R_e; outside this regions (r ∼ 5 R_e) they are mostly near-oblate (p ∼ 0.9) with median flattening q ∼ 0.3 − 0.4, depending on the simulation.