It's a big day for the Democrat Party - as four previous Presidents and their liberal celebrity friends descended on Chicago for the grand opening of Barack Obama's library. The 43rd president's library hosted its opening ceremony on Thursday morning at the massive Jackson Park building in the city's south side , where Michelle Obama grew up, and where the couple settled before he entered the White House in 2009. The campus, which officially opens its doors to the public on Friday, was flooded with prominent political figures and celebrities as a boatload of festivities kicked off to celebrate the big day. The Obamas, Bidens, Bush's and Clinton's all cozied up together for a group picture ahead of the dedication ceremony. One picture showed Michelle hugging former President George Bush as they showed off a can of Altoids mints while former President Bill Clinton laughed behind them. Joe and Jill Biden, the former president and first lady, were seen in a cheeky snap blowing a kiss at the camera together. Michelle and Barack Obama's daughters, Malia and Sasha, also came out to support their parents, waving and smiling big at the crowd.

A-listers swarmed the event, including John Lennon and his wife Chrissy Teigen, former late-night talk show host Steven Colbert, Oprah Winfrey, Tom Hanks and his wife Rita Wilson, Tyler Perry, Steven Spielberg, and former fashion model Jill Vedder, among others. California Governor Gavin Newsom, US Rep. Nancy Pelosi, Illinois Governor JB Pritzker, former Prime Minister of Canada Justin Trudeau, Former White House Chief of Staff Rahm Emanuel, and former Vice President Kamala Harris and her husband Doug Emhoff, and more political bigwigs were also in attendance.

Many guests donned sunglasses as they shook hands and hugged each other ahead of the start of the ceremony, which started with Jennifer Hudson singing the national anthem. President Donald Trump was not invited to the event, as the focus was on welcoming Obama supporters, Obama Foundation CEO Valerie Jarrett said, according to NBC News. Trump is a staunch critic of the Obamas, as he often slams the former president for how he handled things in the White House. He is still welcome to visit the center in the future, she added.

Jarrett, a longtime adviser to the Obamas, made a speech that reflected on her relationship with the couple and their family. 'They were engaged to be married. Malia and Sasha were a glimmer in their eyes, and they were just beginning their careers. 'They didn't know what path their lives would take, but they were both committed to a life of service,' she told the crowd. In addition to Hudson, several other singers are expected to take the stage at the star-studded ceremony, including her boyfriend Common, Christina Aguilera, Marc Anthony, John Legend, Bruce Springsteen, Tems, Stevie Wonder, and others.

Pearl Jam lead singer Eddie Vedder performed an original song called 'Better Believe' that was specifically written for the big event. 'Now, President Obama was aware that I would be playing music with young musicians from the neighborhood, but when he heard we were writing an original piece, a song just for the occasion, he said that might be a lot of work, and as usual he was right,' Vedder said before his performance.

He added: 'But it's been great work, and it's everything the center stands for its inclusivity, its access to resources, its mentorship, and opportunity. So we thank you for this opportunity.' The Obama Center project plans were made public in May 2017, and originally projected to be completed by 2021. But the COVID-19 pandemic sparked delays, along with the expansion of the center's original plans. The campus itself sits on 19 acres of land and includes a public park, museum, library, ample green space, and an NBC regulation-size basketball court. Approximately $850 million went into building the center, making it the most expensive presidential library in US history.