Glee star Darren Criss brought Los Angeles shopping mall The Grove to a standstill on Tuesday (23Nov10) by putting on an impromptu performance.
The actor/singer announced the surprise gig on his Twitter.com page just hours before the event.
In a post on the site, he teased, "If for whatever reason you're near The Grove in LA today, especially around the fountain, stop on by at 2pm for a little acoustic treat."
Fans flocked to the shopping centre and Criss treated them to an acoustic set, which included a rendition of Katy Perry’s Teenage Dream and Part Of Your World from Disney's The Little Mermaid.