This past Saturday Perrier-Jouet and Alice+Olivia held a private fashion show at the EMM Estate, and managed to procure occasional actress Emmy Rossum as back-up eye candy for the label's swirly jewel-toned cocktail dresses. While I'm a bit confused as to ER's current relevance, I totally dig her purple fitted shift. Also adorable? Model Cody Horn's (the daughter of  Warner Bros President Alan Horn and 80's super model Cindy Horn) buttercup yellow trapeze dress.

Rachelle dubbed the hot pink version we found at TJ Maxx "cheesetastic," but in this hue it looks really sweet, and contrasts well with Cody's rocker-chic headband. More photos after the jump.

[Images via Hangin' in the Hamptons]