The actress-turned-reality TV personality appeared in the original 1978 "Halloween" film as a child actress, and last starred in the franchise in 1981's "Halloween II".
And Richards, 50, has confirmed she will return to the horror series, sharing a side-by-side snap of her and co-star Jamie Lee Curtis in the original film and recently posing together at an event.
"It's true I am beyond honored and thrilled to be a part of #halloweenkills And reprising my role of Lindsey Wallace," she wrote on Instagram. "I have always been so proud to have been a part of Halloween. Bringing Lindsey back is very exciting! #halloweenkills2020."
Curtis also enthused that Richards was one of many original characters who will be making a comeback, adding: "Completing the circle! THRILLED to comfirm (sic) that @kylerichards18 is coming back to the @halloweenmovie family where she belongs."
Richards surprised Curtis at a press junket for 2018's "Halloween (2018)", when "The Real Housewives of Beverly Hills" star interviewed the actress for Entertainment Tonight, ahead of the film's release.
It was recently confirmed that a grown-up version of character Tommy Doyle, who also featured in the classic movie, will also return to the franchise, with "The Breakfast Club"'s Anthony Michael Hall taking on the role as he faces off against masked murderer Michael Myers.
"Halloween "is being filmed back-to-back with "Halloween Ends", and will be released in October 2020 and 2021, respectively.