It may have been Pippa Middleton's big day, but all eyes were on her adorable niece and nephew: Princess Charlotte and Prince George. The royal tots both participated in their aunt's nuptials at St. Mark's Church in Englefield, England, on May 20, 2017. (George served as a pageboy and Charlotte was a bridesmaid.) And it was super-cute, to say the least. Wonderwall.com rounded up the best photos of the brother-sister duo during the wedding. Keep reading to check 'em out…
Prince George hung out with his fellow pageboys at aunt Pippa Middleton's wedding at St. Mark's Church in Englefield, England, on May 20, 2017.
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Princess Charlotte rocked a flower crown at aunt Pippa Middleton's wedding at St. Mark's Church in Englefield, England, on May 20, 2017.
Prince George led the pack of pageboys and bridesmaids at aunt Pippa Middleton's wedding at St. Mark's Church in Englefield, England, on May 20, 2017.
James Matthews and Pippa Middleton kissed behind their pageboys and bridesmaids, including niece Princess Charlotte and nephew Prince George, at St. Mark's Church in Englefield, England, on May 20, 2017.
Princess Charlotte looked over her shoulder while heading into aunt Pippa Middleton's wedding at St. Mark's Church in Englefield, England, on May 20, 2017.
Prince George waved through the car window at aunt Pippa Middleton's wedding at St. Mark's Church in Englefield, England, on May 20, 2017.
Prince George hung out with the pageboys and bridesmaids at aunt Pippa Middleton's wedding at St. Mark's Church in Englefield, England, on May 20, 2017.
Princess Charlotte linked up with her mom, Duchess Kate, after aunt Pippa Middleton's wedding at St. Mark's Church in Englefield, England, on May 20, 2017.
Princess Charlotte spent time with her mom, Duchess Kate, at aunt Pippa Middleton's wedding at St. Mark's Church in Englefield, England, on May 20, 2017.
Prince George and Princess Charlotte hung out with their mom, Duchess Kate, at aunt Pippa Middleton's wedding at St. Mark's Church in Englefield, England, on May 20, 2017.
Duchess Kate kept an eye on the pageboys and bridesmaids, including daughter Princess Charlotte and son Prince George, at St. Mark's Church in Englefield, England, on May 20, 2017.
Prince George, Princess Charlotte and Duchess Kate attended Pippa Middleton's wedding at St. Mark's Church in Englefield, England, on May 20, 2017.