The Obama girls are having a blast over inauguration weekend

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Obama sworn in for second term

RAW VISION: US President Barack Obama takes the oath of office in an intimate White House ceremony.

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Barack Obama has taken the oath of office for his second term as President of the United States. In a small ceremony at the White House, Obama swore to "preserve, protect, and defend the Constitution of the United States." The oath was administered by Supreme Court Chief Justice John Roberts; Michelle, Sasha and Malia joined him too.

The formal inauguration starts tomorrow on the western steps of the Capitol at 11:35 a.m (PST).

It's been a big weekend for the Obamas so far. Celebrations also included the Kids' Inaugural Concert on Saturday, a star-studded event that honours America's military families.

First lady Michelle Obama sits with her family as they attend the children's concert at the Washington Convention Center ...

First lady Michelle Obama sits with her family as they attend the children's concert at the Washington Convention Center to celebrate military families on January 19, 2013 in Washington, DC. Photo: Getty

A ballroom full of lucky kids got to rock out with Sasha and Malia Obama as Usher sang 'Yeah!' and Katy Perry donned star and stripes to sing 'Firework'.


"Now, inauguration is a pretty big deal," first lady Michelle Obama, who hosted the event along with Jill Biden, told the assembled families at the Washington Convention Center.

"But I have to tell you that my very favourite part of this entire weekend is being right here with all of you."

The first lady paid tribute to the sacrifices that military families make, including their kids.

Pointing out that such kids often attend six to nine schools by the end of high school, always having to be "the new kid," she said being a military kid meant "growing up just a little faster, and working just a little harder than other kids." The concert was streamed live to several military bases around the country.

This was the second such concert for the Obama girls, and the choice of talent seemed to reflect the fact that they are four years older. In 2009 they were entertained by Miley Cyrus and the Jonas Brothers. This time it was Usher and Perry, along with the groups Mindless Behavior and Far East Movement. Also performing were cast members from the hit TV series Glee.

Usher, in black leather, kicked off the proceedings with his hit Yeah!, followed by Without You and OMG, earning a huge cheer from the crowd. In between acts, there were kid-friendly diversions like a dance-off, or a race among mascots of the Washington Nationals: oversised versions of presidents like George Washington, Abraham Lincoln and Teddy Roosevelt.

Three members of the Glee cast were greeted warmly by the crowd: Naya Rivera, who plays Santana; Darren Criss, who plays Blaine; and Amber Riley, who plays Mercedes.

Nick Cannon emceed the evening, but it was Mrs. Obama, sporting her new bangs and wearing a white peplum shirt over black pants, who got to introduce the top attraction.

"It is now my pleasure to introduce the fabulous Katy Perry!" she said, and the singer emerged in what looked like a vintage swimsuit, covered patriotically with stars and stripes.

Perry sang her hits Teenage Dream, Part of Me, Wide Awake and then Firework, which was accompanied by a slide show of President Barack Obama: Obama in the Oval Office, Obama exiting Air Force One, Obama greeting LeBron James.

"I'm very proud to be here ... and to see the Obamas and the Bidens here for four more years," she said.

- With AP