When she just lost weight I was a little concerned, not because she was too skinny but because it seemed like she lost a lot in a short amount of time, but since she explained everything and I am really happy she is nourishing her body so well and feeling so happy with the vegan lifestyle she chose. Some people are more curvy at a healthy weight and some people are very petite at a healthy weight and both are beautiful as long as it's healthy. So no I do not think she is too skinny. Beside the fact I think she has a beautiful body, Ariana being happy with herself is really all that matters (: