A very famous soccer player attended one of Rihanna's shows during the European leg of her Diamonds World Tour. 

After her show in Lisbon, Portugal on Tuesday, the singer received a visit from Cristiano Ronaldo. The Real Madrid forward with over 18 million Twitter followers, tweeted a photo of their interaction the same day as the concert.

"Yesterday at @rihanna's concert," was the photo's caption.

The pictures show a happy Ronaldo doing a peace sign with his fingers as he poses next to a very blonde Rihanna puckering her lips.

Ronaldo - who is the highest paid soccer player in any league making $20 million annually - wasn't the first big star to pay a visit to a Rihanna show. Christina Aguilera attended the star's concert on April 9 in Los Angeles. She was accompanied by her boyfriend Matthew Rutler. That same night Kourtney Kardashain's boyfriend, Scott Disick, attended the show along with Keeping Up with the Kardashians star Kendall Jenner. The 20-year-old star was clearly more than enthused to be at the performance, she posted a photo on Twitter with a caption that read, "happy RiRi."

Supermodel Adriana Lima attended Rihanna's concert on April 20 in Miami Beach, Fla. Rihanna posted a photo of their encounter on Instagram with the caption, "Only bad b--tches get backstage on the #DIAMONDSWorldTour #nobasiczone @adrianalima."

Fashion designer Stella McCartney attended Rihanna's show in Boston on May 6. The singer showed her excitment by posting a photo of the two on her Instagram account with the caption, "Look who came to see me!! My lover Stella McCartney!!! #dwt."

Rihanna will perform on tour in Europe until the end of July. She will then head to the Philippines and Australia in September. She received 10 nominations at the Billboard Music Awards, which aired on May 19. She took home the win for Top Radio Songs Artist, Top R&B Artist, Top R&B Album and Top R&B Song.

Tags: Rihanna Cristiano Ronaldo