Rachel McAdams touched down at Heathrow airport solo today in a hat, scarf, and trench coat. The actress has been lying low since promoting her film Midnight in Paris over the Summer. The Woody Allen-helmed project introduced Rachel and Michael Sheen, who began dating after working together, and the pair didn't hide their romantic relationship as they toured the world to debut the movie. They even spent time in her hometown of Toronto and with Michael's daughter once they wrapped up their red-carpet duties. Despite being absent from the big screen for several months, both Rachel and Michael have a number of highly anticipated films hitting theaters this year and next. Both star alongside Ben Affleck in Terrence Malick's still-untitled next project, and Michael will reunite with the Twilight cast when Breaking Dawn hits theaters in November. Rachel, meanwhile, reteams with Jude Law and Robert Downey Jr. in the upcoming Sherlock Holmes: Game of Shadows.