Sept. 25 (UPI) -- Celebrity siblings Prince and Paris Jackson attended a family wedding together over the weekend.
Prince, 20, and Paris, 19, wore matching outfits to celebrate cousin Siggy Jackson's nuptials to Toyia Parker Saturday in Encino, Calif.
Prince shared a photo Sunday of himself and Paris at the ceremony. The pair both wore black ensembles, with Prince in a tuxedo and Paris in a sleeveless dress, and carried bouquets of black, red and white flowers.
"It was an honor to be a part of @officialsiggyjackson wedding with my sis @parisjackson," Prince captioned the picture.
Siggy, the son of Jackie Jackson and the singer's late ex-wife, Enid Arden Span, thanked Prince and Paris for their support in an Instagram post Monday.
"I'm so honored proud and blessed to be able to say that they are my Family. This is What Family Means my cousins held me up and together for my wedding and let my wife know that she is Family," the groom wrote.
"Paris and Prince Beautiful and Handsome and I've been Blessed to have them in me my wife and Children's Lives," he added. "I Love You 2 Anytime Any place Always Family First I Love You."
Prince and Paris, the children of late singer Michael Jackson, also spent time together prior to the wedding. Prince posted a snapshot Saturday morning of himself and Paris riding a Harley Davidson motorcycle.
"Get you a ride or die to ride into the sunset @parisjackson #harleydavidson #harleylowrider," he wrote.