Kelly Rowland has gotten married.

The former Destiny's Child singer and her manager Tim Witherspoon tied the knot in a secret ceremony in Costa Rica last Friday, it has been claimed. "It was a quick, simple ceremony - only around 30 people," a source told Us Weekly. Among the guests were Kelly's former bandmate Beyonce and her sister Solange.

Although the nuptials haven't been confirmed, Beyonce had posted a photograph to her Instagram account on the big day wearing what appeared to be a bridesmaids dressed but was captioned only, "'Good morning."

Speaking last December, 33-year-old Kelly admitted she and Tim had been engaged for some time: "He put a ring on it. It's been a while. We've kept it very, very low - for years, to be completely honest." Kelly also revealed her boyfriend of four years proposed on Skype while she was in Bulgaria. "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," she said.