Game of Thrones' Sophie Turner flashes the flesh in cutout gown at X-Men premiere

SOPHIE Turner has proved why Sansa Stark is so in demand in Game of Thrones.

STUNNING: Sophie Turner looked beautiful at the X-Men: Apocalypse premiere

The 20-year-old stepped onto the red – or blue, actually – carpet at the UK premiere of X-Men: Apocalypse in a daring dress that showed off her sexy side.

And it seems her co-stars were also in the mood to show off their naughty sides, as Jennifer Lawrence had plenty of sideboob on display, too.

Sophie's black Balmain gown – the same designer brand that is adored by the Kardashians – was floor-length and full-sleeved.

GROWN UP: Sophie's look was a far cry from what fans see her in on Game of Thrones

But it was anything but conservative.

The redhead showed off her slim figure in tight dress that accentuated her waist with an embellished section.

The actress – who plays a young Jean Grey in the latest X-Men film – looked like she had legs for days thanks to her high heels.

CUT OUT: Sophie's gown was practically only half finished

And the back of the dress gaped open, allowing the babe's slender pins to get some attention.

There were strips cut out all over the dress, meaning plenty of the Brit's skin was on show.

But to make sure she didn't flash more than she wanted, Sophie slipped into a bodysuit underneath.

BUM DEAL: There's no surprise photographers went snap happy for Sophie

Clever girl! She could teach some other stars a thing or two about that…

Sophie's long hair cascaded down over one shoulder and was pulled away from her pretty face, which was done up with minimal makeup.

X-Men: Apocalypse is open in cinemas in the UK now.