I'm not 100% sure, but I would say no older than 10 in my experienced opinion. Lovely video though. Very talented girls aren't they? When I was young, girls either did Ballet, tap dancing or disco dancing. Nowadays it is more popular for young girls to practice and get training in pole dancing and such like similar to what we see here in this video. It's good to be active and have regular hobbies to practice and enjoy. As well as doing it in able to perform and show others too. A good balance away from the daily school work they have to do in their lives as well.
sorry but the girl who plays jisoo dances and as I say it hurried bone does not dance well and the one that at least if I liked it is the intrepeta a lisa that I did like
Bagi kalaian bagus engak dence nya bagi aku sih engak janagan nyalahin aku ya kalau aku bulang jelek dence nya aku bilang jelek gara gara aku dence juga aku pernah manggung ikut abang ku di kalimantan dan aku pernah jadi juri dencee di sekolah ku