In a blog post titled MY THOUGHTS ON KIM AND KANYE ON VOGUE, she wrote: "People are even going so far as to cancel their subscriptions or bloggers are taking down the link to Vogue magazine. I don't want to even go into the awful things people have said about them.
"I find this disgusting. Regardless of whether or not you think Kim and Kanye are worthy enough to be on the cover ... it's not your decision to make. I do believe that would be up to Editor Anna Wintour."
Kelly urges fans to "be happy" for Kim and Kanye, who have nine-month-old daughter North together and are expected to wed this May.
She explained: "So back off, stop shitting on people's dreams that have come true and try for once to be happy for others' success. Stop raining on their parade!"
However, Kelly admits it looks like the cover of US Prom magazine, a publication which covers teen stars.
She added: "There is no denying that it looks like a really beautiful picture for the cover of Prom magazine so I understand why the fashionistas of the world would not like it."
