Britney Spears treats fans to a free concert at the Bill Graham Civic Auditorium on Sunday (March 27) in San Francisco, Calif.
The 29-year-old pop princess taped a performance for Good Morning America, which will air this Tuesday.
After singing “Hold It Against Me,” “Big Fat Bass,” and “Till the World Ends,” Brit was given a framed proclamation stating March 29 will be “Britney Spears Day” in San Francisco!
On Friday, Britney hit the stage at the Palms Casino & Resort in Las Vegas for two mini concerts.