Legs crosses after update

[Underheart7]

Hello. I have one problem with my avatar.
After updating VRChat, I opened it and I just wanted to look throught the mirror at my avatar I made. But when I bend knees, the legs are crossed! I don't how could this happen. My avatar is set up to female. Even when I sit on chair/couch, she sits different(originally, she sit putting her leg on her other leg, you know) .And when my avatar walk, the legs are getting closer, going through the body(crossing again).
If is something to fix that, I don't want to start all over again first with Blender. Is there anything to fix those legs/avatar in Unity?
(I am desktop user btw)