Stars Pay Respect at Mandela Memorial Service

Thousands came together to honor former South African president Nelson Mandela Tuesday, December 10, in Johannesburg, South Africa, where his official memorial service was held.

Click to see world leaders and celebs pay tribute to the late anti-apartheid icon.

President Obama gave a rousing speech at the memorial, which CNN reports as having a "celebratory" vibe honoring Mandela's life, complete with people dancing and singing songs from the anti-apartheid struggle. "We will never see the likes of Nelson Mandela again," Obama said. "To the people of South Africa -- people of every race and every walk of life -- the world thanks you for sharing Nelson Mandela with us."

Charlize Theron, a native South African, blew kisses to the crowd.

Fellow activist and friend Bono attended the memorial with his wife Ali Hewson.

The Clintons, as well as former U.S. president George W. Bush, were also in attendance Tuesday, in what is now being billed as one of the largest gatherings of global leaders in recent history.