  We use simulated attenuation curves from the NIHAO-SKIRT-Catalog to test the
flexibility of commonly used dust attenuation models in the face of the
variations expected from realistic star-dust geometries. Motivated by lack of
flexibility in these existing models, we propose a novel dust attenuation model
with three free parameters that can accurately recover the simulated
attenuation curves as well as the best-fitting curves from the commonly used
models. This new model is fully analytic and treats all starlight equally, in
contrast to two-component dust attenuation models. We use the parametrization
to investigate the relationship between the overall attenuation law shape and
the strength of the 2175 \AA\ bump. Our results indicate variation in star-dust
geometry leads these features to correlate tightly, with grayer attenuation
curves having weaker bumps.
