She has already been on a number of adventures, from her first arrival in Portsmouth through to her deployment to the east coast of the U.S, through to becoming the fleet flagship and finally departing on her maiden operational deployment.
Here are pictures of the aircraft carrier over the years.
13. HMS Queen Elizabeth arrives at the Naval Base
Armed police chat as HMS Queen Elizabeth sails into her home port of Portsmouth Naval Base on August 16, 2017. Picture: Carl Court/Getty Images Photo: Carl Court
14. Portsmouth welcomes HMS Queen Elizabeth home
Huge crowds gathered across the city to welcome HMS Queen Elizabeth as she arrived in Portsmouth for the first time on August 16, 2017. Picture: Leon Neal/Getty Images Photo: Leon Neal
15. Prime Minister welcomes HMS Queen Elizabeth home
Commodore Jerry Kyd (R), listens as Britain's Prime Minister Theresa May stands on the flight deck and speaks to crew members of HMS Queen Elizabeth after she arrived in Portsmouth for first time. Picture: BEN STANSALL/AFP/Getty Images Photo: BEN STANSALL
16. HMS Queen Elizabeth leaves for sea trials
Just a couple of months after arriving, HMS Queen Elizabeth left Portsmouth on October 30, 2017 for her second set of sea trials. Picture: Matt Cardy/Getty Images Photo: Matt Cardy