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(Yahoo!) - There's no denying Rihanna knows how to heat things up, but on Tuesday she was literally on fire. While performing in Portugal on her Diamonds World Tour, the pop star appeared to burst into flames.

Unlike the time Michael Jackson's hair caught on fire while filming a Pepsi commercial, this was a controlled outburst. Although the photo RiRi posted on Instagram made it look like her hair was on fire, she was actually standing in front of carefully placed pyrotechnics, reports InStyle.

The star was wearing a striking ensemble of skin-tight red pants, knee-high yellow boots and a black-and-white bustier (hopefully fireproof), and she dramatically threw back her long blond locks as the flames ignited.

Rihanna's world tour continues Thursday with a show in Istanbul and takes her throughout Europe for most of the summer before hitting Australia in September. The next scheduled US date is on November 11 at the American Airlines Center in Dallas, Texas.


Photo Credit Getty Images & Instagram