Relation between shape parameters at one (top row) and three (bottom row) stellar half-mass radii and λ_R1/2, colored by the b-value. The dashed blackberry lines in the middle column indicate the threshold between slow and fast rotators (Emsellem et al. 2011), lying to the left and right of the line, respectively. The black lines indicate the median values in the respective λ_R1/2 bins and the shaded regions the 1σ ranges (containing 68% of the galaxies above and below the median).