You remember Kimberly Stewart, the former blond who cozied up to Paris Hilton in between Nicole Richie friendship No. 1 and Nicole Richie friendship No. 2?

What you might not know is that in addition to being a socialite, Kim's also a model -- or at least she is now that she has signed onto be the new Ultimo underwear spokesperson, a job that has already been held by two other Stewart women (Rod's ex-wife Rachel Hunter and current girlfriend Penny Lancaster). As first act as "model," Kim spoke out against the size zero models. She told Metro: "No one should be a size zero unless they are naturally that size. No one should feel pressure to be unhealthily thin."

Hmm...is it just me or does it seem like Stewart has left something out of that equation?