The only living core member of 'The Jeffersons' cast made a surprise cameo on ABC live special and Twitter loved it

She moved on up, but she still made the time to drop in.

Marla Gibbs, the last living original core cast member from "The Jeffersons," made a surprise cameo this week during ABC's "Live in Front of a Studio Audience: Norman Lear's 'All in the Family' and 'The Jeffersons.'" The 88-year-old actress reprised her role as Florence Johnston in an unexpected moment near the end of the broadcast.

Wanda Sykes, playing Louise Jefferson, opened the door to find Gibbs, eliciting gasps and applause from the audience. Across the set was Jamie Foxx as George Jefferson.

Sherman Hemsley, who played the original George Jefferson, died in 2012, while Isabel Sanford, who played Louise, died in 2004.

Twitter erupted over Gibbs' arrival, with fans sharing their shock and delight: "I actually got a little teary-eyed seeing Marla Gibbs," tweeted comedian Larry Wilmore. "What a great night of television."

While Gibbs may be best known her "Jeffersons" character from 1975 to 1985 — yes, that's a decade-long run! — her career has continued to flourish with dozens of TV and film roles. In recent years, she's appeared on "This Is Us," "Black-ish" and "Scandal."

Other stars of the night included Woody Harrelson and Marisa Tomei as Archie and Edith Bunker as well as Kerry Washington, Elie Kemper, Will Ferrell, Jackee Harry, Ike Barinholtz, Anthony Anderson, Sean Hayes, Stephen Toblowsky, Amber Stevens West, Jovan Adepo and Fran Bennett.