I knew Yelle at Fashion Addict Diary and then I have searched about Yelle and I found those videos. Exploring I found that its a new way to dance called Tecktonick, and i love it. Its a mix between disco and techno dancing but not sincronizated, so, put on your 80s snikers and shake it!
YELLE - Je veux te voir - VIDEOCLIP
YELLE - "A Cause des Garçons" Remix