The British royal was spotted with the model after The Rolling Stones' headline set on Saturday night (29.06.13) as the pair were joined by friends exploring the festivals nightlife.
A source told The Sun newspaper: ''Harry was well up for it. He was dancing in a grey trilby and a white t-shirt, with two security guards close by. Kate Moss was dancing right next to him.''
The duo were seen in the Rabbit Hole nightclub, although Harry - joined by girlfriend Cressida Bonas - was downing drinks at the Shangri-La area earlier in the night where he watched Radiohead rocker Thom Yorke's DJ set.
An insider added: ''Harry was getting into the spirit of the festival. He was enjoying the bars.
Glastonbury boss Michael Eavis has revealed he encouraged the prince to make the most of what the festival had to offer.
He said: ''Prince Harry was great. I recommended that he go on into the night because the nightlife is what Glastonbury is all about.
''At three in the afternoon you don't get it. I told him to get his driver to come back at five in the morning and - do you know what? He lasted until four.
''His friends were all having a great time. He didn't want to make a formal thing of being here.''
There's already an Oscars buzz surrounding this movie.