Natalie Portman needed security when she walked the red carpet at the 2011 Screen Actors Guild Awards Sunday in L.A.The reason: The Azzaro-clad star was wearing $2 million in Tiffany jewels (see what all the stars wore on the red carpet). "I don't want to advertise that," she said on E!'s red carpet special. "I feel like someone might come chop my ears off or something. I need my ears." She got to show off the pricey jewels on stage when she picked up the best actress award for her role in Black Swan.