The cover of the April issue of US Vogue, featuring Kanye West and Kim Kardashian.

The cover of the April issue of US Vogue, featuring Kanye West and Kim Kardashian.

Kim Kardashian is on the cover of the next issue of American Vogue, the magazine has announced, thrilling the reality TV starlet and unleashing a torrent of Twitter outrage among fashionistas.

Kardashian, 33, appears in a strapless gown in the arms of her fiance, hip hop maestro Kanye West, over the headline: "Kim and Kanye: Their Fashionable Life and Surreal Times" and hashtag #worldsmosttalkedaboutcouple.

On the inside pages, the couple appear in photographs by Annie Leibovitz walking down a desert highway and lounging in a private jet. Their nine-month-old daughter North West also makes a cameo appearance.

"This is such a dream come true Thank you VogueMagazine for this cover! O M GGGGGG I can't even breath!" Kim tweeted.

West - who told an interviewer in 2013 there was "no way" Kardashian shouldn't be on Vogue's cover - was equally pleased, telling his kanyewest followers: "#TRILL Thank you voguemagazine."

Fashion enthusiasts flocked to Twitter as well to challenge the logic of Vogue editor Anna Wintour making a sophisticated cover girl out of a Hollywood celebrity who more regularly appears in downmarket tabloids.

"Hell hath frozen over," tweeted Canadian fashion magazine Flare, while style bloggers Tom Fitzgerald and Lorenzo Marquez said: "This is NOTHING about fashion."

Twitter user ahDORIble posted that: "The last ounce of respect I had for Anna Wintour and Vogue is officially gone."

The April issue of Vogue, with a "spring chic" theme, hits US newsstands on March 31, a week after the release of its digital version.