Rihanna Disses Kanye West Amid 'FourFiveSeconds' Beef? New Album & World Tour 'Canceled,' Kim Kardashian's Hubby Too Hated & Toxic?

Rihanna's new hit song "FourFiveSeconds" (featuring Kanye West and Paul McCartney) was met with rather positive reviews. But apparently, the tune wasn't successful enough for the infamous Barbadian #BadGal...

Here's the official Billboard Charts breakdown for "FourFiveSeconds" (the lead single off of RiRi's highly-anticipated eighth studio record):

US Billboard Hot 100 - 4
US Hot R&B/Hip-Hop - 1
US Adult Top 40 - 16
US Dance/Mix Show Airplay - 8
US Mainstream Top 40 - 6
US Rhythmic - 6

Not too bad, right? The unlikely trio even performed the catchy tune at the 2015 Grammy Awards:

But the "Pour It Up" songstress still wants more!

Rumors initially suggested that 27-year-old RiRi would soon embark on a world tour with Yeezy. The two hip-hop stars would also record an epic collaboration album together.

Well, that's not happening anymore.

Because the "Heartless" crooner's too "lame" for Drake's ex. Wait - what?

According to the infamous gossip webloid MediaTakeOut.com, RiRi suddenly canceled such extravagant plans. It's simply not worth her time and hard work. An alleged industry "insider" explains:

"We all thought [Four-Five] would be a hit, but it's not. It's doing alright, but not what it should... If the song was Rihanna, Paul [McCartney] and anyone else, it would be a hit. But Kanye's just so hated - he's toxic."

Do MstarsNews readers believe it?

And here's another Facebook update via the popular Belgian website ConcertNews:

Eleven days ago, we heard WERCHTER BOUTIQUE will not take place in 2015. Two headlining artists who were planning to go on tour together (European stadiums + Werchter Boutique) canceled their tour. The record release which was also planned is postponed. Today, Live Nation Festivals Belgium confirmed there will be no Werchter Boutique this year. That's all we can tell you folks!

Interesting - if such crazy gossip is indeed true, prepare for yet another wild Yeezy rant...

Rihanna's new album does not have an official release date yet. Meanwhile, she continues promoting her new 3D animation flick, "Home" -

Rihanna Disses Chris Brown AND Drake? 'I Fell In Love With The Beast' Dating 'Bad Luck' Shocker, Now Fears Childbirth? [WATCH]