Game of Thrones actress Sophie Turner has already told her friends the ending

Sophie Turner is really struggling to keep schtum on the Game of Thrones plot.

The actress, who plays Sansa Stark in the hit series, admitted that her loose lips have already given away the ending to the HBO drama .

“I’ve already told the ending of Game of Thrones to a few people,” Turner said in a recent interview with W.

“I’m so bad at keeping secrets. I don’t think people tell me things anymore because they know that I can’t keep them.”

Turner insisted that she was sober when giving away the spoilers, and handpicked who she told because they will keep the secret.

“I was like ‘Hey, if you want to know, I’ll tell you.’ But it’s people that I know, not random people,” she added.

Last week, Turner also revealed that she wasn’t allowed to wash her hair while on the set of the fantasy show, which will come to an end with its next series.

The 22-year-old is well known for her character’s striking red hair – despite currently sporting a shorter platinum blonde style – but described her Game of Thrones preparation as “disgusting.”

The actress opened up about the unexpected downsides of starring in one of the most popular shows on the small screen, revealing that she had to skip hair washes when her character’s storyline changed dramatically in later series.

“For the first few seasons I was allowed to wash my hair because I was an aristocratic young girl,” she told InStyle.

“Towards season five they started asking me not to wash my hair and it was really disgusting. For a couple of years I was living with pretty greasy hair.”

Turner's co-star Kit Harington, who plays Jon Snow, has been faring better with keeping the ending under wraps, revealing that he manages to keep things from his wife Rose Leslie, who used to star in the show, and his pals .

Harington told A-List: “Spoilers are one of those things in my daily life which I just have to avoid. Me and [Rose] and my friends all have an understanding now, which is that you don’t really want to know, even if you push me too hard.”

Game Of Thrones Season 8 begins April 15 at 2am on Sky Atlantic.