8 July 2025 onwards: Luckin Coffee Singapore, Free Sticker Sheet with Duolingo-Themed Drinks Purchase by JR 8/Jul/2025 From 8 July 2025 onward, Luckin Coffee Singapore is offering a charming freebie—order any two drinks and receive a Coffee Chat sticker sheet inspired by their latest Duolingo collaboration. Available at participating stores while stocks last. Read more
