Dust attenuation curves derived from the SED-fitting analysis over the stacked LBGs SEDs obtained from the stacking analysis as a function of M_*. These curves are color coded as a function of M_*: light blue represents larger stellar masses which are grayer than Calzetti’s law (red line), and dark blue corresponds to lower stellar masses which are steeper than Calzetti’s law. As a comparison, we also show the LMC and SMC dust extinction curve (Pei 1992) and two additional attenuation curves derived from UV-selected galaxies at z >  1 (Buat et al. 2011) and star-forming galaxies at z ∼ 2–6 (Scoville et al. 2015).