Lifestyle: The Queen is now officially the world's oldest Head of State

After President Robert Mugabe's resignation on Tuesday afternoon, Queen Elizabeth II became the oldest world leader on the planet at 91.

• The Queen is officially the world's oldest Head of State after Zimbabwe's Robert Mugabe resigned from his Presidential role on Tuesday afternoon.
• At 91 years old and with 65 years on the throne, she is also the UK's longest reigning monarch.

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The Queen is now the world's oldest Head of State after Zimbabwe's Robert Mugabe resigned from his Presidential role on Tuesday afternoon.

Mugabe — who was the oldest Head of State until his surpise move — handed in his resignation after 37 years as president following last week's military coup.

At 91 years old, Queen Elizabeth II has outlasted countless world leaders and Heads of State, including 19 Prime Ministers and 16 US Presidents.

Queen Elizabeth also became the second longest-serving living British monarch in 2015, surpassing Queen Victoria's 63-year reign.

After President Robert Mugabe's resignation on Tuesday afternoon, Queen Elizabeth II became the oldest world leader on the planet at 91. Read Full Story