Can't women be supportive of each other? Why are women so insecure within themselves that they have to put other women down?
Anyway, it won't ever change. But, it's something to think about.
(Of course if it's obvious that one woman is doing something inappropriate with another's man, that's an exception or just being rude).
We as women need to be proud of our own beauty and own all of it! Our crooked nose to our stubby pinky toe! If we can love ourself and be secure with what we have there is no reason to say that someone else is jealous!