Jill BidenJill BidenJennifer Garner to travel to West Virginia with Jill Biden Biden honors his mom on Mother's day: 'She was the quintessential lady' Jill Biden commends moms on Mother's Day for being 'strong and resilient' amid pandemic MORE will be among the big names celebrating the more than half a century of "Sesame Street" as part of a forthcoming documentary on the classic children's TV show.

The first lady, a lifelong educator, is one of the "special guests" who will appear on "Sesame Street: 50 Years of Sunny Days,” ABC announced Wednesday.

The April 26 documentary airing on the network "highlights the more than 50-year impact of this iconic show and the nonprofit behind it, Sesame Workshop," according to ABC.

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Biden joins a star-studded lineup poised to party with Big Bird and Elmo, including Angelina Jolie, John Oliver, Rosie Perez, White House coronavirus task force member Anthony FauciAnthony FauciThe Hill's Morning Report - Presented by Facebook - Cheney poised to be ousted; Biden to host big meeting Overnight Health Care: Biden announces 1M have enrolled in special ObamaCare sign-up period | Rand Paul clashes with Fauci over coronavirus origins | Biden vows to get 'more aggressive' on lifestyle benefits of vaccines Average US daily COVID-19 cases below 40K for first time since September MORE, CNN's Sanjay Gupta, Whoopi GoldbergWhoopi GoldbergObama calls on governments to 'do their part' in increasing global vaccine supply Celebs cheer guilty verdict for Derek Chauvin Jill Biden to appear in 'Sesame Street' documentary MORE, John Legend, Chrissy Teigen, Usher, Gloria Estefan, W. Kamua Bell, Questlove, Olivia Munn, Lucy Liu and Christopher Jackson.

Stevie Wonder is also slated to debut a new version of the "Sesame Street" theme song, "Sunny Days," as part of the show.

The first episode of "Sesame Street" premiered in 1969.

The two-hour documentary, produced by Time Studios, will also include "never-before-seen footage of an episode produced in 1992 focusing on the topic of divorce and around the experience of Mr. Snuffleupagus and his family," a news release said.

The TV special "will examine the decision to ultimately not air the episode, marking the only time in the show’s history such a decision was made."