The royal, now 33, appeared to be quite taken with the stunning actress, now 52, when he was younger, as pictures from his time at Eton re-emerged.
The prince posed for a photoshoot before completing his studies at the boarding school in 2003.
Snaps showed him working in his dorm room and polishing his army boots, which he wore as a member of the Combined Cadet Force.
One cheeky shot saw Prince Harry relaxing in his room surrounded which was decorated with a wall hanging and several pictures, including one smouldering photo of Halle.
The stunning star could be seen crouching down in a racy red dress, glancing sultrily towards the camera.
Joking about the Duke of Sussex’s apparent crush on her, Halle shared the picture with her 157,000 Twitter followers.
“OK #PrinceHarry, I see you,” she tweeted, along with a crying with laughter emoji.
She added the hashtag “#HalleBerryPosta”, in reference to the Missy Elliot song Work It, and also tagged the rapper.
Fans flooded to the comments to share their reactions to Halle’s hilarious post, with one saying: “Well dang Halle can you blame the guy? Hell I want the damn poster now!
“You have always been a beauty and Prince Harry has impeccable taste!”(sic)
“You know you made it when the Prince has your poster hanging up,” another said, while a third added: “I knew he had good taste.”
In the pictures of Prince Harry’s school life, nods to his family sat alongside ordinary indictions of a teenage boy’s room, such as an England flag and more posters.
A framed photo of his mother, Princess Diana, was positioned on his desk, while others showed his father Prince Charles and the Queen.
Although Prince Harry left college with just two A Levels, a B in art and a D in photography, he excelled in sports, playing for Eton’s rugby, cricket and polo teams.
He was also House Caption of Games.
After finishing at Eton, Prince Harry travelled to Australia, Argentina and Africa on a gap year before joining the Army as an Officer Cadet in 2005.
He went on to complete two tours of Afghanistan and since leaving active service he has remained involved with the armed forces through the Invictus Games.
Last year, Prince Harry announced his engagement to former Suits actress Meghan Markle, 37, and the pair married in May.
They tied the knot at a star-studded ceremony in St. George’s Chapel, Windsor, with Prince Charles walking the Duchess of Sussex down the aisle.
In attendance, famous faces included Amal and George Clooney, Sir Elton John and David Furnish, Oprah Winfrey, Serena Williams and several of Meghan’s former Suits co-stars.a