Do long haired Guinea pigs have short-ish length hair when they are young?

We have a crested guinea pig and so we bought her a friend, he crested piggie is only a couple of moths older than our new piggie.

The new piggie is now about 4-5 months old.. She has a crest/rosette on her head like a crested but she has quite long hair at the back and she has what looks like eyebrows (made out of long fur that sticks out. I have seen websites that say this is a sign of a coronet guinea pig. I think she probably is but are they born with fur that isn't longer than a short haired guinea pigs? and how lond does it take for them to grow fully long length hair?

Do long haired Guinea pigs have short-ish length hair when they are young?

Yes this is completly normal like humans, a newborn baby doesn't have 2 foot long hair do they?Also, long haired guinea pigs are either peruvian or coronet in breed.

Do long haired Guinea pigs have short-ish length hair when they are young?

Yes, this is completely normal. It is kind of like us when we are born we don`t have alot of hair then we grow it, hamsters do this as well.

Good Luck!