The actress will appear in a Budweiser advert this weekend
British actress Helen Mirren thinks she may have been asked to present a Super Bowl advert, asking people not to drink and drive, because Americans think she is actually Queen Elizabeth II.
In the ad, made by Budweiser, Mirren admonishes anyone thinking of getting behind the wheel after a tipple.
Sitting in a restaurant, looking directly at the camera, she introduces herself as "a notoriously frank and uncensored British lady".
Warming to her theme, she says: "The collective we are dumbfounded that people still drive drunk".
"So I'll sum it up like this. If you drive drunk, you, simply put, are a short-sighted, utterly useless, oxygen-wasting, human form of pollution"
Interviewed about the advert, Mirren said: "It's brilliant they asked me to do it. I was so thrilled".
"I think possibly maybe they were slightly confusing me with the Queen?".
"They think it's the Queen sitting there saying those things. I don't know. I hope not".
Mirren said: "It's becoming increasingly easy to drink and not drive. It's not don't drink. It's don't drink and drive".
The actress won an Oscar for her movie portrayal of Queen Elizabeth II in 'The Queen'.
She also won a Tony Award after playing Elizabeth II on Broadway in The Audience.
It is the 50th Super Bowl this weekend featuring the Carolina Panthers and the Denver Broncos.