A 20-year-old UK student, who starred in a sex scene in the fantasy epic 'Game of Thrones', has revealed that baring her all for the hit HBO series was one of the most surreal moments of her life after co-star Charles Dance walked in on the sets.

Xena Avramidis, who studies English literature at Cardiff Metropolitan University and had a walk-on-part on Casualty, said that it was a shocking for her, as she had always adored the 67-year-old actor and hadn't even realized that he was supposed to be in the scene, the Daily Express reported.

Luckily, she managed to slip into a dressing robe when someone asked her to meet the actor; otherwise it would have been really embarrassing for her. But Dance turned out to be a real sweetheart and couldn''t have been nicer to her, she added.