We show that simulation results for the intrinsic viscosity [η] are in quantitative agree- ment with the experimental data. Because this value is sensitive to molecular architecture, this matching between simulation and experiment shows that coarse-grained bead-spring simulations are capable of capturing the essential physics associated with bottlebrush polymer conformations; namely, the structure can be explained using the conceptual arguments about how the "size" of the coil changes with M without invoking specific chemistry. This matching also provides a snapshot of typical bottlebrush structures, for which we show a number of examples in Figure . These snapshots were generated using the molecular visualization package Ovito. We note that, for a bottlebrush architecture, the increase in length of the backbone results in a transition from a roughly-star-like polymer, to an elongated structure (around n bb = 87 for both n sc shown), and then finally to a coil-like shape. These transitions are subtly different for each different value of n sc , which is especially apparent around n bb = 87 and 175, which show that the longer branches lead to a marginally "stiffer"appearing structure. In subsequent sections, we will further explore these bottlebrush shape transitions in a quantitative fashion.