Former band members Beyonce and Michelle Williams were also in attendance, as well as Solange Knowles, who was no doubt still reeling from her fight with Jay-Z at the Met Gala just days before.
The couple wed in a beachside ceremony in what looked to be a relaxed, low-key affair. The groom, bride and guests all wore white to the ceremony, which was held on some decking underneath a decorated marquee.
Kelly wed the former boxer, who she has been engaged to for some time, surrounded by close friends and family - rumoured to have only been about 30 people.
In an interview last December, the star said: 'He put a ring on it! He asked me first on Skype and I was like, "We're so far away from each other." But it was so late, I remember we were both just kinda like, honestly, just staring at each other.'
'And he asked me, and it was just that simple to say yes,' the star added.
Following the wedding on Friday, news broke that Solange Knowles had attacked Jay-Z in a lift at the Met Gala. But despite the feud, the couple seem to be sticking by Solange, with Jay-Z being pictured on a shopping trip with the 27-year-old days after the event.