Ireland Baldwin and Elle creative director Joe Zee took ET behind the scenes of the Marchesa fashion show.
The two fashionistas made a day out of the event, starting with Ireland's Marchesa fitting. The budding model, 18, went with a black lace Marchesa Voyage mini-dress with gold sequins.
"I don't think many people would be able to pull off something like this," said Ireland, praising the designer's creativity. "It's all detail. I love that."
Once dressed, Ireland, fashion's new "it" girl, was mobbed on the street by fans and paparazzi.
"It's like a runway show," said Joe, capturing it all on his camera phone.
Backstage, Ireland and Joe congratulated Marchesa's co-founders -- Keren Craig and Georgina Chapman -- who are gearing up for the Oscars.
Click the video to see their response to being the talk of the town leading up to Hollywood's biggest night.