Pippa Middleton worried future brother-in-law Spencer Matthews will spoil her perfect wedding?

Spencer Matthews will not be able to share pictures from his brother James' wedding to Pippa Middleton because the Dutchess of Cambridge's sister has reportedly banned him from posting online any snap from Saturday's ceremony.

Spencer is expected to be the best man. The Made In Chelsea reality star is an active presence on social media, with more than 1.8 million followers on Instagram and Twitter.

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"She has had to have stern words with Spencer about uploading any selfies to his social media accounts," a source told Mirror. "Pippa and James want it to be a very private event and do not want anything to distract from the fact they want it to remain a classy affair."

Shortly after Pippa and James' engagement was announced last year, reports emerged that Kate Middleton was unhappy with it.

 

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A post shared by Spencer Matthews (@spencermatthews) on May 5, 2017 at 8:36am PDT

"[Kate] is horrified about Spencer being Pippa's brother-in-law," a source told Life & Style at the time. "Spencer has slept his way around London and left a lengthy trail of angry women in his wake," a different insider revealed. "Kate's concerned. The last thing she wants is for William's family to turn against her because of Spencer's actions."

Spencer is a former star of Made In Chelsea and the British version of ABC's hit dating reality show The Bachelor. He is known for his womanising ways and he once told a girlfriend on a reality show that it was hard to respect her when she allowed him to cheat.

He also revealed intimate details of his sex life in a 2014 tell-all memoir titled Confessions of a Chelsea Boy. In it, he claimed to have slept with at least 1,000 women, and describes his experience engaging in a sixsome with some "nifty Canadian girls."