Check out Rihanna's most legendary fashion choices and observe how the 'Good Girl Gone Bad' singer's style has changed throughout the years.
The singer also performed 'Love The Way You Lie' and 'The Monster' for the festival crowd in Chicago.
With just a week to go before Eminem and Rihanna take to the stage on their 'The Monster' tour, they both gave fans a taste of what to expect as the rapper headlined Lollapalooza in Chicago last night (1st July).
As well as performing 'Love The Way You Lie' and 'The Monster', Rihanna also performed Dido's parts on Eminem's classic hit 'Stan' for the first time. (You can watch that performance above.)
Here's the moment Eminem and Rihanna performed 'Love The Way You Lie'.
Rihanna had this to say after the performance.
Eminem and Rihanna's 'The Monster' tour is set to see them perform together at venues across America and marks Eminem's first major tour since he released 'The Marshall Mathers LP 2' last year.
(Warning: these videos contain strong language that some people may find offensive.)