Muhammad Ali's funeral will be held today in his hometown of Louisville, Kentucky.

Fifteen thousand people are expected to attend an interfaith service open to the public that will be held at the KFC Yum! Center at 2 p.m. Former President Bill Clinton, Billy Crystal, and Bryant Gumbel and his wife, Lonnie, will give eulogies. Also expected to speak is Sen. Orrin Hatch, R-Utah.

PHOTO: Muhammad Ali and Will Smith pose at the premiere of the film Ali, in Los Angeles, Dec. 12, 2001.Rene Macura/AP Photo
Muhammad Ali and Will Smith pose at the premiere of the film "Ali," in Los Angeles, Dec. 12, 2001.

Will Smith, who portrayed the boxing legend in "Ali," and former heavyweight champion Lennox Lewis will be pallbearers. The remaining three who will carry Ali's casket are family members.

PHOTO: Former Heavyweight Champion Muhammad Ali joins then Heavyweight Champion Lennox Lewis at an event in London, Jan. 15, 2001.PA Wire via AP
Former Heavyweight Champion Muhammad Ali joins then Heavyweight Champion Lennox Lewis at an event in London, Jan. 15, 2001.

Poetry will be read by Attallah Shabazz, Malcolm X's eldest daughter, while Valerie Jarrett, a senior adviser for President Barack Obama, will give a statement. Other guests of note include Turkish President Recep Tayyip Erdogan and King Abdullah II of Jordan.

The service will be led by an imam and will include clerics from multiple religions. After the service, a private reception for friends and guests is scheduled at the Muhammad Ali Center in Louisville.

Mourners Pay Tribute to Muhammad Ali
SLIDESHOW: Mourners Pay Tribute to Muhammad Ali

A procession will head through the streets of Louisville, passing through Ali's childhood neighborhood and down a street named after him, as well as by the Muhammad Ali Center and the Kentucky Center for African American Heritage.

Ali will be buried at the Cave Hill National Cemetery in Louisville. Another prominent figure buried there is Colonel Harlan Sanders, the founder of Kentucky Fried Chicken.

PHOTO: Muhammad Ali attends the 2014 Muhammad Ali Humanitarian Awards at the Louisville Marriott Downtown on Sept. 27, 2014 in Louisville, Kentucky.Stephen J. Cohen/Getty Images
Muhammad Ali attends the 2014 Muhammad Ali Humanitarian Awards at the Louisville Marriott Downtown on Sept. 27, 2014 in Louisville, Kentucky.

Ali was pronounced dead at the age of 74 late Friday night after arriving at a Phoenix hospital to be treated for a respiratory issue days before. His cause of death was "septic shock due to unspecified natural causes," family spokesman Bob Gunnell said. He was surrounded by family when he died.

ABC News will live stream Ali's funeral on its website and app.