Left panel: fit of the disk size-luminosity relation from sub-millimeter observations of protoplanetary disks in differentstar forming regions (colors) as reported in Hendler et al. (2020) compare to the relation for TDs (open circles) and disks with substructures (full triangles). Right panel: evolution of the radius that encloses 95% of the mass of dust particles larger than 0.1 mm from the models that assume strong pressure bumps, M_disk = 0.05 M_⋆, and α = 10⁻³.