That's something we've never seen before!!
But if you thought the front was insane, just check out that back!!
[Image via Getty Images.]
Like in her movie roles, Rachel McAdams is also able to show a wide range in her fashion choices.
Featuring a triangular cut-out at bust and a chain detail at the neckline, the flared mini frock was beautifully flattering as it showed off Rachel's toned gams.
And we just adore her beehive updo with the wispy side bangs! She's so making fetch happen!
[Image via Dave Bedrosian/Future Image/WENN.]