Inside Fashion Week's Most Glamorous Show

Fashion's new 'it' girl, Ireland Baldwin, takes us backstage at the Marchesa fashion show.

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.