Evolution of i) stellar-mass fraction within r < 1 kpc, f_{*, < 1} (left panel); ii) median stellar half-mass radius, r_50, * (centre panel); and iii) median half-mass radius of young stars (i.e. age < 1 Gyr), r_50, young (right panel), for the same stacks of galaxies in 0.5 dex M_* bins shown in Figure 9. Higher mass galaxies (bluer) show a decreasing enclosed stellar-mass fraction as newly formed stars are born at progressively larger radii, which is consistent with inside-out galaxy growth. Conversely, low-mass galaxies (redder) appear to become increasingly centrally concentrated, with an outside-in trend where newly formed stars are found at progressively smaller galactocentric radii.