I don't care for them, it's seems very childish, like it won't age well, though nicknames are very popular in places like England.
Annie - originally a nn for
Anne, could also be used for
Annette,
Anneliese,
Annika,
Ainsley, etc.
Jessie - originally a nn for
Jean, could also be used for
Jessica
Carrie - originally a nn for
Caroline, could also be used for
Carla,
Carina,
Carlotta,
Carmela,
Carys, etc.