By DAILY MAIL REPORTER
Darker by day: Rachel McAdams on the set of The Vow wearing a dark wig on Monday in Toronto, Canada
She's experimented with many hair colours over the years.
But bottle blonde Rachel McAdams has reverted to her natural shade on the set of her new movie by sporting a brunette wig.
The actress was seen on location in Toronto, Canada, on Monday, emerging from her trailer on the set of The Vow.
Wrapped up warm: The actress is naturally brunette and covered her blonde-dyed hair with the headwear
The 31-year-old was dressed in boots and a winter coat on Monday to combat the chilly weather in Toronto, Canada where the film is being shot.
The Notebook star grabbed a muffin from the catering table before getting into her car.
McAdams, who previously dated Hollywood hottie Ryan Gosling, is now involved with Welsh actor Michael Sheen.
On Sunday The Notebook star and the Queen actor were pictured holding hands for the first time publicly in McAdams' home province of Ontario, Canada.
Bottle blonde: Rachel dyes her hair, but her brown roots are apparent here
Both not being new to celebrity romances, acted coyly when they realised they had been photographed, but there was no denying the close chemistry between the two.
McAdams and 41-year-old Sheen met on the set of the upcoming Woody Allen film Midnight in Paris.
They had been rumoured to be getting cosy, including at the film's after party during the Toronto International Film Festival.
Going public: Rachel McAdams and Michael Sheen pictured for the first publicly holding hands in Toronto, Canada, Sunday
According to People Magazine, Sheen gushed about McAdams, 'All my scenes were with Rachel.
'Yeah, we had a great time in Paris. She's a genuinely lovely lady as well as being stunningly beautiful and very talented so, you know, she's got it all going on there.'
Midnight in Paris is scheduled to be released in 2011.
The romantic comedy about a family travelling to the French capital for business has a star-studded cast, including Oscar winners Marion Cotillard and Adrien Brody.
source: dailymail
Darker by day: Rachel McAdams on the set of The Vow wearing a dark wig on Monday in Toronto, Canada
Wrapped up warm: The actress is naturally brunette and covered her blonde-dyed hair with the headwear
Bottle blonde: Rachel dyes her hair, but her brown roots are apparent here
Going public: Rachel McAdams and Michael Sheen pictured for the first publicly holding hands in Toronto, Canada, Sunday
