Prince Harry attended Glastonbury Festival with his girlfriend Cressida Bonas, somehow managing to go unnoticed.

Now it seems the secret to Prince Harry’s ability to mingle with the crowd at Glastonbury was in his outfit.

In the first image that has emerged of Prince Harry, 28, he is seen wearing the oldest and best form of disguise – a hat and sunglasses – as he explores the site with a large group of friends.

Prince Harry, who is known for his love of a good party, was photographed from behind while chatting to a friend.

His side profile is instantly recognizable, as is the dash of red hair which can be seen poking out the front of his hat.

It seems Prince Harry’s pals may have been in on his little disguise as a number of them are also wearing trilby hats in the picture.

He wore a grey one, pulled over his head while shades were firmly on his face. He is also seen wearing jeans and a pair of trainers.

Prince Harry attended Glastonbury Festival with his girlfriend Cressida Bonas, somehow managing to go unnoticed

Prince Harry’s girlfriend, Cressida Bonas, can be seen strolling just behind him wearing a pair of dungarees with a bright blue hat and her arm draped around another pal.

The Prince’s ability to go unnoticed ensured he had what sound like an epic weekend at the festival.

As well as being seen hanging out with Kate Moss’s posse, Prince Harry was seen with girlfriend Cressida Bonas on the dancefloor at wild hardcore dance club The Rabbit Hole.

The club which was in The Park area of the festival was the main hangout for hard-partying stars like Kate Moss, Cara Delevingne, and Sam Branson – who were able to remain anonymous among the crowd.

They had their own VIP area which overlooked the VIP teepee accommodation provided to celebrities such as Cara Delevingne, Florence Welch and Kate Moss.

Prince Harry joined the model after watching The Rolling Stones headline set, and following a recommendation from festival organizer Michael Eavis to stay and sample the event’s varied and wild nightlife.

A source told The Sun: “Harry was well up for it. He was dancing in a grey trilby and a white T-shirt, with two security guards close by. They just let him get on with it.”

Michael Eavis, 77, said: “Prince Harry was great actually. I recommended that he should go on into the night, because the nightlife is what Glastonbury is all about.

“At three o’clock in the afternoon, you don’t get it.”

Michael Eavis said he did not join Prince Harry for a pint of cider as he abstains from drinking from two months before the festival until after everyone has left the site.