The Destiny's Child singer opened up about the proposal in a chat on The Queen Latifah Show and revealed that Tim popped the question to her via Skype while she was in Bulgaria.
X Factor USA judge Kelly has always remained private about her love life but she was beaming from ear to ear as she broke the news to Queen Latifah and the studio audience last night.
"He put a ring on it," she said. "He asked me first on Skype. And I was like, 'We're so far away from each other'."
Kelly, who has been dating manager Tim on and off for four years, continued: "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.
"I was like, I got my best friend to ride through life with. He really is my best friend," she added.
Kelly proudly showed off her diamond ring to the studio audience and also revealed that she has been engaged to Tim for "a while".
She first sparked engagement rumours last month when she was seen with the ring on her fourth finger in an Instagram video.
Kelly's confirmation comes just a week after she remained coy over the engagement rumours when she appeared on The Arsenio Hall Show.
She said: "You know what I will say? I am very happy and I believe in Black Love. I'm so happy."
Congratulations to the happy couple!
Watch Kelly speak about the proposal in the video below:
Check out more stars engaged in the gallery below:
Copyright: Instagram Mark Wright