Middle age is a time for weight gain. Because Alizee is so physically active, one would expect her to keep the weight down, but she does love her bonbons, Nutella, and ice cream sundaes. It's impressive that she's as slim as she is.
Il Jouait Du Piano Debout is one of my favorite Alizee videos. I like watching her sing it, I like her hair, the audience's participation, and the choice of music. She seems to enjoy the performance as much as the audience does. Alizee does appear, however, emaciated. When I first saw this video, I wondered what was going on in her life that she would be so slim. As it turns out, she was just a slim girl when 15 and 16 years old. It amazes me how comfortable she seems on the stage at that time. I wonder if she ever suffered stage fright.
I suspect Il Jouait Du Piano Debout was made around the time she won the M6 award in 2000. She was pretty slim then. Alizee is, by the way, the most adorable award winner there is.
https://www.youtube.com/watch?v=gGb6-ktV0dM
https://www.youtube.com/watch?v=y0vf8xZVn4I
https://www.youtube.com/watch?v=h-ZHFO1A0EI
https://www.youtube.com/watch?v=I9cSKLPB2nk