Cobie Smulders looks stunning at The Avengers premiere

Cobie Smulders, who is best known for her role as Robin on How I Met Your Mother, stunned on the red carpet of her latest film The Avengers. The dark-haired beauty donned a floor-length Donna Karan dress with a plunging neckline, according to People Magazine. She matched the gorgeous gown with a black clutch and fabulous earrings.

The actress joined the red carpet with the series of A-list celebrities who are also in the film including Scarlett Johansson, Chris Hemsworth, Chris Evans, Robert Downey Jr. and Jeremy Renner.

According to The Hollywood Reporter, Smulders discussed how some of the scenes were quite sweat-inducing.

"We were shooting in this crazy dome. It was the biggest air-sealed vacuum in the world," Smulders told the news source. "Sam and I were climbing up these steps. We had to go up all these flight of stairs. By the end of it we were just drenched."

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