Transcript for The Hottest Fashion on the Oscar Red Carpet
And of course, the dresses. The gowns. The tuxedos for the boys. So many looked great. Robin and I hathere to share the glitz and glamour. The stars did not disappoint. Sfoet ♪ ♪ they didn't just vie for Oscar gold. They were battling it out for best dressed. You have to train to walk in a train. Reporter: Lupita nyong'o wows with sky blue Prada princess gown kicking off a blue moment with Amy Adams and an Alexander mcqueen-clad Sandra bullock. Love the Navy blue. Oh, wow, sit. It is. Thank you. Reporter: Whether it was pharrell in shorts. Please tell me there's a black tie version of the hat somewhere waiting for you for later. I don't know. Maybe? I don't know. Love the hat. It loves you back. Reporter: The "Dallas buyers club" guys wore white. And Channing Tatum admits he as an active say in what his wife wears. He says he weighed in. Yes, yes. He's really good. I text him pictures. This was hands-down the win person. Glad you approve of this Reem acra. Girls get crazy. Guys are very binary. Kate says she consults with mom. She's in a gold -- Versace. We live seven blocks away and so we go to each other's house. It's so fun. It's really fun. Reporter: Jennifer Lawrence wars by the stair test. Did you consider walking up the stage this year? This year, I did a stair test in the back staircase. It worked. For them. But I tripped over a cone. I guess I'm not safe. Reporter: But she sure was sexy with a diamond necklace dangling down her back. How about that 31-karat stunner on Charlize Theron.
This transcript has been automatically generated and may not be 100% accurate.