If Brenda Song's jewel-encrusted Marchesa gown at "The Social Network" premiere in New York looked familiar, it's because Fergie wore a strikingly similar gown with the same looped waist detailing to the "Nine" premiere in New York last year.

While both gowns (from the Resort 2010 collection) are no doubt gorgeous, I was swept off my feet by the whimsical, chiffon overlay and train presented in Fergie's design, so I'm giving this one to her.

Which style is the right way, and which one needs to hit the highway? You tell me in the comment section below.

Photos (left to right): Jim Spellman/WireImage; Dimitrios Kambouris/Getty Images