Hollywood chic in New-York

(Left to right: Kate Bosworth in Stella McCartney, Ashely Olsen in "The Row", Kate Moss in Marc Jacobs, Carmen Dell'Orefice.)

The traditional annual Costume Institute's Gala or the "Met Ball" (in the Metropolitan Museum) took place Monday night, celebrating the new exhibition "The Model as Muse."
Watching the red carpet, you couldn't not t notice the "glamorous chic, Hollywood goddess/film starlet" many of the attending VIP chose to embrace.

(Agyness Deyn in custom Burberry Prorsum.)
(Left to right: Liv Tyler & Kate Hudson wearing Stella McCartney dresses with the designer, Oscar de la Renta with Daphne Guinness, in his design, Nadja Auermann, in Lanvin, Sasha Pivovarova in Giambattista Valli, with the designer)
(Left to right: Liv Tyler in Stella McCartney,Chanel Iman in Zac Posen, Bee Shaffer, in Nina Ricci, Sessilee Lopez, in Zac Posen, Katy Perry, in Tommy Hilfiger.)

What was the inspiration behind this trend? Was it pictures of glamorous supermodels? Was it

the will to forget about the recession and go back to a more nostalgic & classic times like the 50'&60? Or was it just a crazy idea of a stylist, that watched too many movies of that era?