Fans hold pictures of pop star Justin Bieber near Mexico City's main historic plaza, the Zocalo, Sunday, June 10, 2012. The Beliebers have arrived in the chaotic streets of Mexico City, adolescents in purple and white and braving two nights on roach-infested sidewalks for a chance to be closest to the stage when teenage superstar Justin Bieber puts on a free concert Monday evening on the capital's vast central plaza.(AP Photo/Marco Ugarte)
MEXICO CITY (AP) — Hordes of school-skipping "tween" girls and their parents streamed into Mexico City's historic main plaza Monday jostling for the best spots at a free concert by teen superstar Justin Bieber that was expected to draw 200,000 people.
The gray and reddish stones of the Zocalo were covered in a sea of purple as the mainly 10- to 14-year-old crowd paid homage to what is reported to be Bieber's favorite color.
Under a hot afternoon sun, girls trundled through security checkpoints with hats and umbrellas, staking claim to some of the roughly 80,000 spots allocated in the plaza itself. An additional 120,000 or more were expected to watch on giant TV screens erected on nearby streets.
Fernanda Gutierrez Aparicio, a 13-year-old seventh grader at a local middle school, said she spent a week camping out with her mother on a nearby street in hopes of being among the first to enter. She said they returned home only to bathe and look after Fernanda's 15-year-old sister, who recently had surgery.
But her mother, Adriana Martinez, 41, gave up on trying to get her daughter into the front rows because of the press of other fans.
"I was really disappointed. When we got up front, people were crushing you, not letting you breathe," Martinez said. Even hours before the concert, "People were jostling each other and it got to the point that you couldn't move."
To Fernanda, it was all worth it — even missing the week of classes leading up to the two-hour concert that was to open with Canadian singer Carly Rae Jepsen and Mexican DJs "3BallMTY."
"I told my teacher that I wasn't going to school and not to expect me in class for a few days, because I was going to be out supporting my idol," Fernanda said.
Fernanda most wanted to hear Bieber sing "That Should Be Me," which pretty much reflects her feelings about the Canadian singer.
"I want to be Selena Gomez, to be with him," she cooed, referring to Bieber's girlfriend.
Authorities said they would have more than 5,000 police on hand, partly to prevent the sort of crush that injured 40 Bieber fans at a free concert in Oslo, Norway, in late May.
"Most of the fans will be between 10 and 17 years old. There will be a lot of girls," said Hector Antunano, a city official. "We are being very careful that the majority of the police are women and we are taking precautions so that there is no rush toward the stage."
Karina Gutierrez, a 13-year-old who uses a wheelchair, was disappointed with the spot authorities assigned to youngsters with disabilities.
She was the first fan to arrive in the special area that was set aside in one of the corners of the plaza, far away from the stage.
"Visibility is not very clear from here," said Gutierrez, who used an umbrella to protect herself from the hot sun.
She missed school and her parents didn't go to work so the whole family could attend the concert. Gutierrez arrived to the capital Monday morning with her parents and two brothers from the city of Toluca, about 45 miles (70 kilometers) from the capital.
"They wanted to see him from up close," said Gutierrez's father, Juan Manuel Salinas. "It's not fair that they are so far back."
Hundreds of children with their parents waited for police officers to search backpacks and purses in lines that snaked around the giant plaza, which was almost at capacity two hours before the concert was scheduled to start.
The Zocalo is ringed by some of the most historic structures in the hemisphere: Mexico's Metropolitan Cathedral, the National Palace and the partially excavated remains of the Aztec capital, Tenochtitlan.
The plaza was created by the Aztecs in 1325 and was redrawn after the Spanish conquest of 1521. Bieber's performance emptied the sprawling square of its normal population, heavy on tourists, street vendors and political protesters, some of whom agreed grudgingly to clear space for the concert by abandoning an encampment there after negotiations with the city government.
A similar concert in the Zocalo last month by former Beatle Paul McCartney drew an estimated 230,000 people, including President Felipe Calderon. There was no word on whether the president would take his children to see Bieber.