The queen wants a queen!
The 67-year-old, who won an Academy Award for her portrayal of Queen Elizabeth II, admitted that she would have a hard time adjusting to the pressure and attention that the Duchess of Cambridge faces, especially during her pregnancy.
"That's weird isn't it, everyone knowing when you're in labor," she told British Media. "That must be so uncomfortable."
The Hollywood veteran also hoped that the royal couple welcomes a baby girl, saying, "We need more Queens in our life."
But as far as baby naming goes, Mirren believes that the Prince William and his wife won't stray too far from traditional British names.
When asked about whether or not the name Diana would be used (if they have a girl), she said, "I wonder if they'll go there. That would be interesting, wouldn't it? That would be very interesting."
There was one name, however, that Mirren was certain on.
"Her second name will be Elizabeth without a doubt."
The Red 2 actress also suggested that Queen Caroline "would work," in honor of Kate's mother, Carole, and that Charlotte or Victoria could also be monikers suitable for a monarch.
"It would be nice to have one of those ancient Anglo-Saxon names," Mirren said.
And the world will know soon enough whether or not a Prince or Princess of Cambridge is named the future heir to the throne.
Kate was admitted into St. Mary's Hospital early Monday morning, at approximately 6 a.m. local London time.
Her husband was by her side as the two were driven by car from Kensington Palace into the side entrance of the private Lindo Wing.
The palace confirmed in a statement that Kate was "in the early stages of labor" and said that "things are progressing as normal."
The Great Kate Wait is quickly coming to an end!