The dancer's death was announced by her sister in an emotional Facebook post. She wrote: "My beautiful baby sister is no longer with us and I don't know how to process it. "I love you Kerri, you're my best friend, we were inseparable and right now I don't know how to fill the void. Be peaceful and hold Nan tight."
On March 16 last year, Kerri published a blog post on Medium, where she opened up about "self doubt, anxiety and financial struggles." She began: "The last two years have challenged me beyond belief, it’s definitely not all been sunshine and rainbows. My career was hit so badly that indeed, it affected my financial situation.
"My future prospects were put on hold for the foreseeable, and my motivation was becoming harder to maintain. I have admittedly had moments of self-doubt and anxiety, and I have had to take action to save myself from those dark places that are very hard to return from."
She continued: "So the world wants perfection, and here I am, the furthest thing from it. I am now stuck in a hamster wheel, trying to move forward without admitting to anyone, including myself, that my life isn’t as shiny as it seems."
She then wrote that even those who are "mentally strong" have "vulnerabilities" before opening up further about an "unhealthy relationship" with food.
Neil has posted an emotional tribute to Kerri, saying: "Kerri Anne Donaldson- remember that name and please never forget it because it belongs to a woman who loved to dance, create and perform, she had the cheekiest laugh and a heart of gold.
"She hated getting in the car with me, but would always listen to my crazy ideas, we shared so many moments and stories and she was always the voice of reason. Kerri you were my friend and like my big sister."
And former Strictly pro Kevin Clifton, wrote: "Absolutely heartbroken. I’ve known Kerri since we were kids and she was always the loveliest girl.
"A friend and a dance partner. I’m glad we got to dance together this xmas. And that the whole cast of Strictly Ballroom got to work with you in rehearsals. RIP."
Kerri-Anne's cause of death is not currently known.
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