Beyonce: 'Kim Kardashian is a bad choice for Kanye'

What do you get when you throw a bunch of superstar egos into a boiling pot and stir? A celeb catfight made in tabloid heaven — like the one brewing between Beyonce Knowles and Kim Kardashian. Apparently.

New mum Beyonce hasn't got maternal feelings towards Kim, the new girlfriend of Kanye West, close friend to B's hubby Jay-Z.

"Beyonce's not happy about Kanye's relationship with Kim. She had a conservative upbringing which was very different to Kim's," a source told The Sun. "Bey's never been impressed by her record with men and the sex tape that leaked a few years ago."

In defence of Kim, we're not sure Beyonce was the target market for the sex tape.

The source added that Kim's 72-day marriage is also a sticking point with the 'Single Ladies' diva, who married Jay-Z in April 2008.

Kanye recently denied reports that he called Kim "my Beyonce", adding that "if I don't say something in a rap or on Twitter, it's not true".

So why is this an issue for Beyonce? Well, she and Kim are expected to tag along with Jay-Z and Kanye on their Watch the Throne UK tour from May 18 to June 22.

That's a whole month of painting nails, shopping trips and karaoke nights, ladies. Maybe Kim will even babysit Beyonce's bub Blue Ivy?

Stranger things have happened. You know, like a little show called Keeping Up with the Kardashians.