On 3 July 2015, Sanrio announced a full-length animated Hello Kitty theatrical feature initially planned for 2019. In early 2019, it was revealed that New Line Cinema would be teaming up alongside Sanrio and Flynn Picture Company for an "English language film based on the venerable kid brand." In 2021, it was reported that Jennifer Coyle and Leo Matsuda had been hired to direct the film with Lindsey Beer set to pen the script.
on 3 julY 2015, SANRio annouNCeD a Full-LEngTH anIMaTeD heLLo KiTTy tHeatricaL fEAturE INitiaLly pLannEd fOr 2019. in eaRlY 2019, it was reVealED that nEw lIne cinema WOUld be teaMInG uP alonGSiDe sANriO and flynn pICtUre ComPany foR an "ENglISh languagE fiLm basED oN the veNErable kId brAnd." in 2021, IT was rePORted tHat jEnniFeR coyLe aNd leO MatsudA had beEn HiReD to dirECt THe FIlm wIth liNDsey BeeR SeT to PEN the scrIpt.