Kim Kardashian makes a shock appearance at the Arsenal v

Kim Kardashian makes a shock appearance at the Arsenal v Sporting Lisbon game in London

Kim Kardashian makes a shock appearance at the Arsenal v Sporting Lisbon game in London with her Gunners fan son Saint, 7, as part of a secret new documentary

Kim Kardashian traded the sunny climate of Los Angeles for London on Thursday with a surprise performance at Emirates Stadium.

The 42-year-old reality superstar was photographed in the stands watching Arsenal take on Sporting CP in the second leg of their Europa League game.

She cut a low-key figure in the VIP area and was joined for the duel by her seven-year-old son Saint.

To show he’s quite the fan, the little one donned a signature Gunners football top as he watched the action unfold – as his ultra-famous mum was draped in a cream coat.

But the appearance may not have been just to see the game as it is reportedly part of a mystery documentary being filmed at the north London site.

LA to London!  Kim Kardashian made a shock appearance at the Arsenal v Sporting Lisbon game with her Gunners fan son Saint, 7, on Thursday as part of a secret new documentary

LA to London! Kim Kardashian made a shock appearance at the Arsenal v Sporting Lisbon game with her Gunners fan son Saint, 7, on Thursday as part of a secret new documentary

Supporters: The little one showed he's quite the fan, donning a signature Arsenal football shirt as he watched the action unfold

Supporters: The little one showed he’s quite the fan, donning a signature Arsenal football shirt as he watched the action unfold

Kim kept her brunette locks in a natural curl while opting for a full palette of makeup.

Always the doting mom, she wrapped both arms around Saint while watching the match she shares with ex-husband Kanye West.

The little one has previously revealed he is an avid supporter of the team and even donned one of their shirts earlier this year.

Saint pointed to the field with a smile, while Kim once had her jaw dropped as Arsenal and SP Lisbon went head to head in a 1-1 result.

They were undoubtedly satisfied in the first half as Granit Xhaka scored Arsenal’s first goal of the game in the 19th minute.

But Pedro Gonçalves, who scored for Sporting Lisbon in the 69th minute, took power back – before the game went into extra time.

According to The Sun, the game’s appearance is part of a mystery documentary being filmed on the soccer field.

The TV personality shared a picture to her Instagram Stories and joked that her 348 million followers are “sending help” as she prepares to watch the sporting event.

She snapped a snap of merchandise and Prime drinks – which sponsor the club – while waiting for things to get going.

Getting involved: Always the doting mom, she wrapped both arms around Saint while watching the match she shares with ex-husband Kanye West

Getting involved: Always the doting mom, she wrapped both arms around Saint while watching the match she shares with ex-husband Kanye West

Still glamorous: Kim kept her brunette locks in a natural curl while opting for a full palette of makeup Still glamorous: Kim kept her brunette locks in a natural curl while opting for a full palette of makeup

Still glamorous: Kim kept her brunette locks in a natural curl while opting for a full palette of makeup

Sending help: The TV personality shared a picture to her Instagram Stories and joked that her 348 million followers are

Sending help: The TV personality shared a picture to her Instagram Stories and joked that her 348 million followers are “sending help” as she prepares to watch the sporting event

Football fans were shocked to see Kim, who rarely spends time in the UK, at the game – and even wondered if her presence had unnerved the players.

Sitting next to a blonde pal, Kim appeared in high spirits as the pair shared a laugh.

While a group of children in matching Arsenal football tops stood next to Saint to watch the clash.

Many fans joked that she was “not allowed to return” and took to social media to ask if her participation was the reason for Arsenal’s lack of goals.

“You obviously can’t have both Kim Kardashian and a win,” one fan joked.

Another added: “Kim k-curse in full effect for Arsenal today”.

Staying warm: The reality superstar donned a cream coat with a tie at the waist for the performance

Staying warm: The reality superstar donned a cream coat with a tie at the waist for the performance

Enjoying it: Kim sat next to a blonde pal and appeared in high spirits as the pair shared a laugh

Enjoying it: Kim sat next to a blonde pal and appeared in high spirits as the pair shared a laugh

Love it: Kim engaged as she giggled with others in the stadium's VIP area and pointed out the players Chilled: She kept a demure figure while watching the clash

Love it: Kim engaged as she giggled with others in the stadium’s VIP area and pointed out the players

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lucky charm? Football fans were shocked to see Kim, who rarely spends time in the UK, at the game – and even wondered if her presence had unnerved the players