It's been pretty remarkable how quickly Rachel Bilson turned into a world-consuming supernova of cuteness - after all, just a few months ago she was "that girl from the OC who isn't Mischa Barton", but these days she's widely regarded as precious enough to warrant photos of her doing the most random, mundane things. I mean, I have the sneaking suspicion that snapshots of Estelle Getty at Petco wouldn't be nearly as compelling as the ones we took of Rachel over the weekend - although it helps that Rachel's dog is practically at Bilsonesque levels of adorable itself!