Kelly Rowland has married her manager Tim Witherspoon.

The Destiny's Child star tied the knot in a simple ceremony over the weekend, sources have confirmed to Billboard/The Hollywood Reporter.

Among the guests at the small ceremony were Beyonce and her sister Solange Knowles.

Us broke the story, revealing that the ceremony took place on Friday May 9 in Costa Rica. A source told the publication that it was "a quick, simple ceremony - only around 30 people."

Rowland announced her engagement to Witherspoon on The Queen Latifah Show last December, saying: "He put a ring on it.

"It's been a while. We've kept it very, very low - for years, to be completely honest."

Rowland is currently working on a new album, Billboard has reported.

She said of the record: "I'm at the very very beginning stages of the record. We're at the point now where we are all talking – writers [and] producers – we're all excited.

"There are fresh ideas coming into the studio right now. We're trying different beats. It's a really great start."