US pop singer Britney Spears will deliver a free Christmas concert in a downtown Mexico City plaza, said mayor Marcelo Ebrard.
Spears will perform at the Monument to the Revolution on Sunday, kicking off Christmas festivities in the populous city, Mr Ebrard said.
In late August 2009 some 11,600 volunteers set a Guinness world record by dancing to the Michael Jackson song Thriller in unison at the Monument to the Revolution.
Mexico City festivities include a giant Christmas tree; an ice rink at the Zocalo, the main city square; and artificial snow during a parade.
The so-called Princess of Pop will also perform at concerts in the western city of Guadalajara tomorrow, in Mexico City on Saturday, and in the northern city of Monterrey on Tuesday.