I really like
Amber. Unfortunately, it does seem to be shorthand in the media/entertainment for a snobby, ditzy character. But I don't think it's become a total joke name - my belief is that once people met a little girl
Amber, those associations would fall away if they were ever there. I'm not sure where you're from -I'm English and
Amber is pretty much at its (low-ish) peak now. But if you're American, perhaps that could also work in your favour, because people will be likely to know real-life Ambers who have tempered the 'stripperish' associations of the name.