Is this hairstyle NPC exclusive? Or is it bugged out from hairstyle selection

I'm not sure, maybe it's a reward when you level up? 

I moved Jaiden in via marriage recently. I changed his clothes and got a message that if I replaced them, I was removing ‘owned content’. I thought that meant my Sim I was playing (who was proposing to Jaiden).

But after reading this post, I checked the clothes items and Jaiden’s former clothes aren’t there. I won’t change his hair now.

(In Sims 2, Sims had access to all the clothes (depending on gender) the household had or bought. In Sims 3, career outfits unlocked were available for all household members. Not sure about Sims 4.)

in an old account during the soft release I had that hair in the CAS options, but in my current account that hair is not in CAS.
It's my favorite hair of the sims 4 and I can not find it in The Sims Mobile CAS for now too.
I hope he comes back soon.

I also found this weird. My sims grown up children end up having the spiky boy hair, and one of the children that I moved in had a ponytail that was in other sims games. I am confused because I cannot find this hair in the inventory so I can’t change the color or anything. I want to know where the hair came from and why it is hidden. I don’t want to risk losing the special hair so my sim is stuck with it because it is pretty. Sorry at the moment I do not have a picture because the file size is too big. 

I think that it was removed prior to the global release. As far as i know, that before global release, you could buy it for 300 simoleons. I have also seen a curly shoulder length hairstyle for females, and i am wondering if this is NPC exclusive.

I have it in create a sim mode. I dont know how old this post is, but i believe with the recent updates it may have became avaliable for 1615 simoleons. But i do believe i have seen it before in create a sim before the llamazoom update. If it is not in CAS for u now i believe it could be a bug.