She described the Strictly tour experience as a “complete joy” and magical.
“Devastated is an understatement,” she added.
Catherine signed off: “Wishing my #Strictly family the best time with the rest of the tour. If you get a chance to watch it – GO! It’s unbelievably magical.”
Many of the Strictly cast including Stacey, AJ Pritchard, Emma Barton and Graziano Di Prima took to the post to share their thoughts and wish her a speedy recovery.
Her partner added: “Babe it’s defo wasn’t our last dance!”
Stacey simply wrote: “Sis,” followed by the crying face emoji and a heart.