Sweeney was among the A-list guests who attended the star-studded ceremony, which also included sisters Kim and Khloé Kardashian, their youngest sisters Kendall and Kylie Jenner and family matriarch Kris Jenner;

On Saturday, the stylish “Euphoria” star headed to Jeff Bezos and Lauren Sánchez’s post-wedding pajama party in Venice, Italy, wearing a black lace gown by Galia Lahav that accentuated her bust. She wore her blond tresses down in long, loose waves and paired the glam look with minimal jewlery.

Also spotted at the Venice nuptials of the Amazon founder and his bride: Tom Brady, Kim and Khloe Kardashian; Kylie, Kendall, and Kris Jenner; Usher, and Queen Rania of Jordan.