Rachel McAdams arrived at the "Morning Glory" U.K. premiere last night wearing a deceivingly sexy sun dress.  With the plunging neckline and side boob reveal, the actress walked the red carpet fully confident in her attire.

The actress admits she was "nervous" about portraying an upstart TV producer in the comedy and even tried to convince her director she wasn't right for the project.

Rachel is currently dating actor Michael Sheen.  They reportedly met at a party earlier this year to celebrate the release of his movie "Beautiful Boy."

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