Pippa Middleton’s wedding is right around the corner, and her family is excited and hoping that everything goes well on her big day. It is no surprise that her sister, Kate Middleton, may be a bit worried about Prince George and Princess Charlotte’s behavior possibly disrupting the ceremony, especially since they have important roles to play during the nuptials.

George, 3, and Charlotte, 2, are all set to be Pippa’s page boy and bridesmaid, respectively, and have no doubt been practicing with the help of their mom. “[Kate] said that they were all really looking forward to her sister’s wedding at the weekend, but she was a bit worried about how her children might behave,” Andrew Bates said, after her chat with the Duchess of Cambridge, People reported. “She said she was hopeful that they would be good, but you never know at that age.”

READ: Prince George and Princess Charlotte are part of Pippa Middleton’s wedding entourage

Meanwhile, it remains unknown what Kate’s role in Pippa’s wedding will be. Reports confirmed that Kate will not be Pippa’s bridesmaid or maid of honor due to etiquette, Mirror reported. Bridesmaids are traditionally picked from women of marrying age who are single, so Kate does not qualify to be one. If someone who is married would be taking a similar role, she would be dubbed as the “matron of honor.”

Initially, it was expected that Kate would return the favor of being a bridesmaid to her sister as Pippa had been hers back in 2011. But since the Duchess of Cambridge is not qualified anymore, many are wondering about her role in the ceremony since she is still expected to be part of it.

However, royal author Judy Wade said she believes Kate might take the backseat and allow the bride to get the full attention of the guests on her wedding day. “Kate would upstage her sister. It’s a tricky situation for Pippa. She would want her sister by her side, as who else would she trust to make things go well?” Wade told People. “But if your sister is a future Queen, she is going to upstage the bride and draw attention. Kate would want to be in the background as much as possible.”

Whether or not Kate will play a role in the ceremony, she will certainly be in attendance for the nuptials. She has given a lot of help and showed her support for the bride-to-be over the past few months, starting from her wedding preparations to her bachelorette party. In fact, the duchess joined Pippa for her hen party in Meribel, France. She was also spotted on several occasions in Pippa’s home in London, doing some last-minute wedding preparations.

Pippa and fiancé James Matthews are expected to exchange vows on May 20 at St. Mark’s Church, which Kate, Pippa and their brother James visited a lot growing up. The bride-to-be has limited the numbet of wedding guests by imposing a “no ring, no bring” policy. However, crowd control might not be easy for the organizers because weddings are considered a public event and the church welcomes all parishioners for ceremonies. It would not come as a surprise if there were to be gatecrashers during the nuptials.

“It’s a rather nice thought that they might be able to attend. I’m sure there will be interest,” said Andrew House, chairman of the parish council for the neighboring village of Bradfield, as per The Telegraph. “A marriage is a public ceremony which at the least all parishioners are entitled to attend.”

Are you excited for Pippa’s wedding? Do you think Prince George and Princess Charlotte will be on their best behavior during the event? Drop a comment below.