Amy Adams Drops Jaws in a Sexy Plunging LBD at the BFI London Film Festival

Now that is one smokin' hot look.

Amy Adams hit the red carpet for a photocall to promote her upcoming film Arrival at the 60th BFI London Film Festival in England today, and she dropped jaws in a super sexy black dress. For the occasion, the actress donned a plunging Alexander McQueen creation that featured a skin-baring neckline, long sculptural sleeves, a peplum detail at the waist, and a hemline that hit just below the knee. She accessorized her statement LBD with a pair of simple stud earrings and chic ankle-strap pumps. Adams styled her signature long locks in loose bombshell waves that she swept to one side.

But that wasn't the 42-year-old star's first revealing ensemble of the week. Just yesterday at the movie's premiere, the famous red head donned an ethereal white Valentino Haute Couture gown that came complete with an asymmetric neckline and a butterfly embroidery along the skirt.

Amy Adams was a goddess at the premiere of The Arrival at the BFI London Film Festival, gracing the red carpet in a white Valentino Haute Couture gown with an asymmetric off-shoulder neckline and a butterfly motif along the skirt.

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VIDEO: See Amy Adams's Style Transformation

Catch Adams in the sci-fi thriller Arrival when it hits theaters November 11.