Rachel McAdams upped the drama on Monday night at the London premiere of her upcoming Marvel film, "Doctor Strange."

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The Oscar-nominated actress stunned in a one-shoulder Elie Saab Couture gown on the red carpet. The floor-length gown was sheer with large blue and grey birds embroidered onto it.

McAdams, 37, who posed for photos with her co-stars Benedict Cumberbatch and Tilda Swinton at the premiere, rocked the bold look with a sleek ponytail as she strutted her stuff on the carpet. Her glam style choice also showed off her impressive stems and toned bod.

This look is just her latest in a series of stunning styles. Last week she rocked a fitted champagne Versace gown in Los Angeles.

"It's a fine fit they do!" she gushed to ET's Nischelle Turner on the red carpet.

WATCH: EXCLUSIVE: Rachel McAdams Turns Heads at 'Doctor Strange' Premiere, Talks Adorable Ideal Superpower

McAdams also recently stopped by "The Ellen DeGeneres Show" to talk about her highly-anticipated superhero flick.

"It's kind of one of the more psychedelic comics. It was written in the '70s, I think when the writers were experimenting with psychedelics," she told DeGeneres. "So it's pretty trippy and kind of cool. It deals with magic and the occult and parallel universes and all this wild stuff."