Paris Hilton put a pause on her own wedding planning to celebrate another big family milestone: the wedding of her younger brother Barron Hilton!
The 28-year-old third-born of hotel magnates Richard and Kathy Hilton tied the knot to socialite Tessa Gräfin von Walderdorff on Sunday in a stunning ceremony in St. Barts.
Paris, 37, posted some of the first social media images of the wedding on Sunday, showing the new husband and wife beaming in front of the church steps.
“Mr. & Mrs. Hilton,” wrote Paris on Instagram, adding the wedding hashtag, #TessaBarron2018.
Many of Barron’s other famous family members were in attendance, including Nicky Hilton Rothschild, 34.
“It’s official!” Nicky captioned a photo of the bride and groom kissing.
Paris and Nicky snapped photos on the beach leading up to the big day and shared sweet congratulatory photos of their baby bro and his new bride.
This article originally appeared on PEOPLE