A shiny new Vogue cover [1] isn't the only fashion highlight of Lena Dunham's week. As if her cover-model stint and Zac Posen-clad Golden Globes turn [2] weren't enough to affirm her style status, a ladylike Lena joined her onscreen (and offscreen!) pals at the London premiere of Girls.

Perhaps the high-fashion shoot rubbed off a bit on Lena, who looked at her most sophisticated in a white lace cocktail dress and patent-leather slingbacks. On either side, Zosia Mamet wore a pastel Elisabetta Franchi jumpsuit and Allison Williams accentuated her long lines in a high-neck Alexander McQueen gown. Read on to get a better view of the looks and to no doubt cement your girl crush!

Image Source: Getty [3]