It's our duty to look at that booty.

Kate Sullivan-Bramnick has what the scholars of old would call a "posterior perfectum." That's a "perfect booty" in modern parlance. And it appears that she is well aware of that fact, considering how frequently she posts pics that highlight her delectable derriere.

Currently, Miss Sullivan-Bramnick sports blondish locks, though you don't have to look hard to find her rocking blue or bright red 'dos. We're not sure which is our favorite, but as long as she keeps that backside toned, firm and -- most important -- photographed frequently -- we're here for it.