Queen Elizabeth II to attend UK Cabinet meeting at Downing Street for 1st time

Queen Elizabeth II is due to sit in on a Cabinet meeting for the first time, where she is expected to take a seat between British Prime Minister David Cameron and Foreign Secretary William Hague.

Her visit is believed to be the first time a sitting monarch has attended a Cabinet meeting in at least 100 years.

The government said the queen will attend Tuesday's meeting as an observer — not as a contributor — in honor of her 60 years on the throne. But her visit has raised some eyebrows for appearing to blur the traditional line between government and monarchy.

As head of state, the queen performs some ceremonial and formal duties related to government but must remain neutral on political matters.