Carrie Underwood injected a little country into The Rolling Stones' show in Toronto, Canada on Saturday night (25May13) by joining them onstage.

The Before He Cheats hitmaker teamed up with the British legends to perform It's Only Rock 'N' Roll (But I Like It) and the singer reveals her appearance at the concert came on a special day.

In a post on her Twitter.com page, she writes, "8 years ago today, I won American Idol and tonight, I sang with the Rolling Stones! Wow, so much has happened!"

Underwood joins a lengthy list of stars who have joined the rockers on their 50 & Counting anniversary tour - Katy Perry, Dave Grohl, Gwen Stefani, Keith Urban and Tom Waits have all appeared at previous concerts.