Kate Bosworth, Busy Philipps, Olivia Wilde at LA CFDA Party

Kate Bosworth, wearing Proenza Schouler's Spring/Summer 2012 collection, joined boyfriend Michael Polish, Olivia Wilde, Busy Philipps, and Dianna Agron at Vogue's 2011 CFDA Fashion Fund finalist celebration at LA's Chateau Marmont yesterday. Kate and Michael have been constant companions over the past few months, and in addition to their romantic trip to France he also recently accompanied her to a taping of Chelsea Lately. Olivia chose a flirty floral dress for the cocktail reception then changed into a sexy black Yigal Azrouël gown for her red-carpet arrival at last night's In Time premiere.

Busy selected a trendy mint wrap dress for the event and recently told us she's considering recycling last year's homemade Tinkerbell costume for Halloween for her big night of trick-or-treating with daughter Birdie. Fresh off her win at last weekend's Scream Awards, newcomer Chloe Moretz was also on hand for the soiree as were Mad Men's Elisabeth Moss and actress Michelle Monaghan.