Eminem & Rihanna tour UPDATE: 'The Monster' August 2014 concert dates & venues announced! Buy tickets March 28, will 'MMLP2' rapper headline Lollapalooza music festival?

It's official - Eminem and Rihanna will perform together at three major USA stadiums across the country in August 2014. Slim Shady announced the exciting tour news on his website on Wednesday (March 19):

This August, Eminem and Rihanna will be co-headlining a series of stadium shows for The Monster Tour. The tour will kick off in Los Angeles on Thursday, August 7 at the Rose Bowl with shows then lined up in New York City's Metlife Stadium on Saturday, August 16 and Detroit's Comerica Park on Friday, August 22.

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Fans can sign-up for the March 22 "VIP" ticket presale through Facebook. Otherwise, tickets go on-sale to the public on March 28 at 10 a.m. EST. The Live Nation presale takes place on Thursday, March 27. Get more info at Live Nation or check-out the mobile app.

How many fans plan on attending the highly-anticipated "The Monster" tour?

Meanwhile, rumors suggest that Eminem might headline this summer's Lollapalooza Music Festival in Chicago. The official lineup won't hit the web until next week, but The Chicago Tribune leaked a list that included several big-name performers including the infamous MMLP2 rapper, Skrillex, Kings Of Leon, and Arctic Monkeys. Take these rumors lightly... because the alleged list does not include Outkast. But stay tuned!