The Blue Crush actress attended an event in honour of actor Kevin Spacey held by the Museum Of The Moving Image, and Kate certainly pulled out all the stops for the occasion.
The stylista opted for a cute cream dress designed by Giambattista Valli, which was covered in a luxurious sparkling floral pattern.
Her fancy thigh-skimming frock also featured a large pink bow across the chest along with a matching rosy cape.
Kate let her head-turning dress do all the talking by keeping her jewellery minimal, wearing a delicate pair of diamond earrings.
And we heart her choice of footwear - metallic rose gold pointed courts? Errr... yes please!
Kate and Kevin are old friends after starring together in Beyond The Sea and Superman Returns, in which Kate played Lois Lane.
Clearly excited to celebrate her pal's career, Kate tweeted: "Alright Mr. spacey, let's do this."
The actress was joined at the event by her film director hubby Michael Polish, who wore a smart black suit and tie combo.
Kate and Michael married in an intimate ceremony in Philipsburg, Montana, back in August 2013, held on a mountain top at The Ranch at Rock Creek.
The couple met on the set of the film Big Sur in 2011, with Michael popping the question a year later.
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