A private memorial was recently held to commemorate the life of the late award-winning actor, Robin Williams.

On Saturday, hundreds of Williams' closest family and friends gathered at the San Francisco Curan Theater to celebrate the life of the late actor.

Williams' good friend, Billy Crystal, hosted the special tribute, while Whoopi Goldberg, Bonnie Hunt and his long-time personal assistant Rebecca Erwin Spencer remembered him as well, according to People.

Stevie Wonder led a music tribute alongside San Francisco's GLIDE Ensemble and Change Band. Videos of the late actor were also showcased in certain parts of the program.

Williams' widow, Susan Schneider and his children, Cody, Zelda and Zak, each spoke about their late father.

Other celebrities in attendance included Pam Dawber, George Lucas, Danny DeVito, Rhea Perlman, Bette Midler, Penny Marshall, Ben Stiller, Eddie Izzard, Mario Thomas and a whole lot more, Entertainment Weekly reported.

Following the special private memorial, guests were invited for a reception at the Westin St. Francis Hotel where they enjoyed some food and drinks.

Williams' who will be seen in the upcoming film "Night at the Museum: Secret of the Tomb" passed away on August 11 at the age of 63.

Following his death, his wife Susan released an official statement to E! News.

"Robin's sobriety was intact and he was brave as he struggled with his own battles of depression, anxiety as well as early stages of Parkinson's Disease, which he was not yet ready to share publicly. It is our hope in the wake of Robin's tragic passing, that others will find the strength to seek the care and support they need to treat whatever battles they are facing so they may feel less afraid."

Williams' three children all thanked their father's loyal supporters and fans for being with them throughout the most difficult time in their lives, Fashion Times noted.

"I just want to say thank you for all the stories and letters I've been receiving, especially from those who's also lost loved one," Zelda tweeted.