Rachel McAdams attended "The Vow" Los Angeles premiere yesterday and stood out on the red carpet with bright red lipstick.  She wore a light blue strapless dress accented with a matching metallic necklace and bracelet.

In the film a man (Channing Tatum) tries to win back his new bride's heart after she loses her memory in a car accident. On set Channing played a big prank on his co-star. He got the props department to make a prosthetic penis for a scene that required him to walk around the bedroom naked.

McAdams told Stella magazine, "It was ridiculous, the scale of it!"