• BREAKING NEWS ABC shows live and on-demand -- Download the WATCH ABC app!

OTRC: Britney Spears to hold free concert in Mexico City, celebrates birthday

Britney Spears appears in a photo from her 2011 Femme Fetale tour in a photo from her official Twitter page. (twitter.com/#!/britneyspears)

Britney Spears is set to hold a free concert in Mexico City on Sunday, December 4.

The newly 30-year-old performer will follow up a performance from her Femme Fetale tour with a free show that will take place at the Monument to the Revolution, according to The Hollywood Reporter.

The performer Tweeted, "Can't keep the secret any longer... I'm staying an extra day in Mexico to do a free show this Sunday!! http://tumblr.com/Z3HisxCdtJOE"

The show will kick off the city's $2.6 million Christmas celebration, the industry paper reports, and is expected to draw in 50,000 people.

Spears also took to her Tumblr page to express her appreciation for her fans.

"I've had so much fun and received so much love from my fans all over the world while performing my Femme Fatale tour which I am grateful for," Spears wrote. "I want to return some of that love so I've decided to give my fans in Mexico a special night and perform my Femme Fatale show for free."

Spears recently turned 30-years-old on December 2, and spent the day with boyfriend Jason Trawick, who is also her love interest in her new video "Criminal."

The icon received Happy Birthday Tweets from celebrities such as Kim Kardashian, Nicki Minaj, Justin Bieber, Miley Cyrus, Katy Perry, Christina Aguilera and Rihanna.

Kardashian Tweeted, "Welcome to the 30's club @BritneySpears Love you," and dedicated a post to the pop icon on her official website.

Minaj took to Twitter in true Nicki fashion with kind words and a video with her alter-ego.

"Happy Birthday to a fellow SAG & beautiful ICON @britneyspears," Minaj Tweeted.

Spears' 2011 album Femme Fetale took the No. 1 spot on the Billboard 200 chart in April. See photos of the starlet's transformation through the years (photos).

(Copyright ©2018 OnTheRedCarpet.com. All Rights Reserved.)