do names need to be full versions

[rhia22]

me and my partner are arguing because we love the names freddie charlie and jamie for our boy but I think he should have the long versions on his birth certificate (even though i don't necessarily like frederick charles and james) and my boyfriend doesn't... what are people's take on this?

Jamie is definitely a name in its own right and to be honest the other two probably are these days. That said if I had a Freddie I would definitely use Frederick because I love it, Charles not so much whereas Charlie I like.