Olivia Wilde Sizzles At Cowboys & Aliens Swiss Photo Call

Single life agrees with Olivia Wilde!

While promoting her two new flicks The Change-Up andCowboys & Aliens, the star (who split from hubby of 8 years Tao Ruspoli earlier this year) has been steaming up the red carpet -- with her wardrobe. From red-hot structured sheaths to form-fitting black dresses, the actress, 27, has been having some serious style hits.

PHOTOS: Stars in sexy red dresses

Such was the case at the 64th Festival del Film di Locarno in Locarno, Switzerland on Saturday, where Wilde stepped out for the Cowboys & Aliens photo call in a stunning black and gold dress, plus flawless hair and makeup to boot.

PHOTOS: Stars in flashy frocks

The one-of-a-kind Gucci gown featured a shimmering fringe top and a skirt with a thigh-high slit. The actress completed her glam ensemble with black Brian Atwood peep-toe pumps, a Jimmy Choo clutch, and Carrera y Carrera earrings.

PHOTOS: Stars in crazy, sexy shoes

This isn't the first time that Wilde has gotten gussied up in one of Gucci's show-stopping numbers: the actress donned one of the label's gowns at the 2010 Golden Globe Awards -- a sparkling gunmetal gown with a plunging neckline, which she later auctioned off to support Artists for Peace and Justice, a Haitian relief fund.

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