The couple announced their engagement last December after they had dated for several years.
Rowland's former, fellow Destiny's Child singer Beyonce and Beyonce's sister, Solange, attended the May 9 ceremony after Solange's now-infamous altercation with Jay Z, Beyonce's husband, at a Met Gala after-party May 5.
"It was a quick, simple ceremony -- only around 30 people," a source told Us Magazine about the wedding.
Rowland's publicist did not respond to the media outlet's requests for comment regarding the happy event.
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