The tennis star and Reddit co-founder, who recently became parents, exchanged vows in front of their friends and family, including Beyoncé, JAY-Z, Kim Kardashian, Ciara and Eva Longoria.
According to Entertainment Tonight, the wedding was Beauty and the Beast-themed and guests were asked to dress accordingly.
For the ceremony, the bride wore a dress and cape by Sarah Burton for Alexander McQueen, before changing into two different reception looks by Versace, which she accessorised with bejeweled Nike sneakers. The bridesmaids (including Serena's sister Venus) wore convertible gowns by Israeli-based designer, Galia Lahav.
Their newborn daughter, Alexis Olympia Ohanian, was also in attendance.
Below, see all of the photos from the celebrity wedding of the year.