Julianne Moore helped the Diamond Information Center host a chic dinner in Bungalow no.1 of the famed Chateau Marmont hotel to celebrate diamonds, designers and Hollywood glamour. Four-time Oscar contender Moore dispensed some good advice to this year's nominees: "Go and have a great time, meet people and have fun. It's a fun celebration—it sounds silly to say that, but that's really what it is," said the actress, who mingled with Laura Dern and Ben Harper.