The Dance Like We're Making Love hitmaker is set to walk down the aisle with the American football star after he proposed to her as they vacationed in paradise.
Sharing a sweet picture of Russell down on one knee, she wrote: "God Is Good! Grateful For You @DangRussWilson. You Are Heaven Sent. I'm Looking Forward To Spending Forever With You ... I Feel Complete."
The Seattle Seahawks player also posted a video taken just after the proposal, where Ciara can be seen flashing her stunning diamond ring.
He tells the camera: "She said yes! Yeah! Making this thing happen. My baby."
To which she adds: "Yay! I'm so excited. God is so good."
Sharing the video on his social media page, the 27-year-old sportsman wrote: "She said Yes!!! Since Day 1 I knew you were the one. No Greater feeling... #TrueLove @Ciara (sic)"
Meanwhile, the 30-year-old singer - who already has son Future, 21 months, from a previous relationship - recently revealed she'd love to have a family with Russell.
She said: "I definitely [want more kids], yes. [Russell and I] discuss a lot of things ... a lot of good things! He is just an amazing guy. Honestly, him being in my life is really sweet ... Life is pretty good, I can say that."
- BANG! Showbiz