It popular with girls that age, it was when I was at school as well. They kept getting playboy bunny tattoo's which they all regret now... It's pretty enough though.
I have seen quite a few things with the playboy bunny on them for sale watches, rings etc. It depends what sort of jewellery she likes really. Not my sort of thing, but I think she may like whatever you choose to buy for her if you are close.
If I was 16 and a boyfriend bought me that I would be delighted. It's pretty, bunny and all. I think the playboy bunny has lost it's sleazy connection. There are a lot of playboy bunny items about these days.
16 year olds are not that interested in whether things are classy or not.
No Hugh Hefner has built his empire on sleaze and buying it gives him an endorsement and no doubt he profits by any sales with his logo on - your girlfriend must be worth more than that cos you are such a nice boy - - just look up the other answers most say it's lovely but lose the bunny and they are right - well done you for seeking advice your girl friend is a lucky girl AND please let us know what you get her x