Model KLFs for the youngest, ~5 Myr old stellar population at R = 2′′. Black line: Kroupa IMF; blue line: IMF from Lu et al. (2013); red line: IMF from Bartko et al. (2010). The latter two KLFs were created with a tool that does not include pre-MS evolution and therefore lack the bump at K ≈ 18. The surface density is normalised to R = 2′′ (0.08 pc), assuming that it rises as R^-1 towards Sgr A*. The surface density was normalised with the densities measured by Lu et al. (2013). The green line is the KLF measured from our data and normalised to the star counts at K_s = 18. We note that all known massive, young stars at K_s ≲ 16 are excluded from this KLF.