Rihanna takes the stage at Jay-Z and Kanye West's Watch the Throne show in London

Rihanna takes the stage at Jay-Z and Kanye West's Watch the Throne show in London The Bajan songstress Rihanna surprisingly took the stage during Kanye West and Jay-Z's show at the London's O2 Arena on Sunday night, May 20. Though not featured on rappers' tracks, Rihanna performed two songs with Jigga and Yeezy, "Run This Town" and "All Of The Lights." You may watch fan footage of the singer's guest appearance after the jump.

The show was the third in succession that the rappers had played at the O2 Arena. The run continues tonight (May 21) and tomorrow (May 22) before the rappers head off to Europe. They return to the UK for more shows next month. The duo have been playing two hour, 40-song sets during their O2 Arena run, with a large chunk of Watch The Throne and a number of hits from their respective solo catalogues also aired.

Jay-Z & Kanye West "Run This Town" feat Rihanna

After the show, Riri shared her excitement to her 19 million-plus followers on Twitter. "#RihannaNAVi made history tonight as the first person to Watch The Throne AND join it!!! No one is allowed on that stage! Thank u guys," so she declared on a tweet. She also posted a backstage photo of herself with a caption, "WTT tour #London."

Jigga and Yeezy will head off to Switzerland on Thursday, May 24 for a performance at Zurich Hallenstadion. They are also set to play in other European countries, including Denmark, Sweden, France, Belgium and Germany, until mid-June. The U.S. leg of their tour will be kicked off October 28 in Atlanta, GA.