Anjelica Huston, Katie Couric, Mr. T and More Expected to Attend Nancy Reagan's Funeral

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ET has the latest details on Nancy Reagan's funeral, including the eclectic mix of Hollywood stars expected to attend.

The former first lady's final journey began on Wednesday morning, as her daughter, Patti Davis, attended a brief service in Santa Monica, California where eight U.S. Secret Service agents served as pall bearers. Following the service, a motorcade made the 45-mile drive to the Ronald Reagan Presidential Library in Simi Valley.

WATCH: A Look Back at Ronald and Nancy Reagan's Love Story

More than 1,000 people have reportedly been invited to the funeral. The guest list includes heads of state and former presidents, as well as Oscar winner Anjelica Huston and journalists Katie Couric and Sam Donaldson.

Melissa Rivers is also expected to attend, as her mother Joan was a good friend of Nancy's.

One of Nancy's greatest accomplishment was her "Just Say No" anti-drug campaign, which included many Hollywood players like Mr. T (who is expected to attend the funeral), Clint Eastwood and Michael Jackson.

In 1983, Nancy made an appearance on the sitcom, Diff'rent Strokes.

WATCH: The Obama and Clinton Families Remember Former First Lady Nancy Reagan

The episode addressed the drug issue by introducing a storyline where drugs are being distributed in Arnold's (Gary Coleman) school.

Diff'rent Strokes star Todd Bridges went through a bout with addiction after the show, but now that he's 23 years sober, he credits Nancy's message for helping him turn his life around.

"When I finally got sober then I completely understood what she meant by that," Bridges said. "The last thing I'm going to do is allow someone else to take me down."