I did. We were already set on a name (kept it secret) and a friend (well more of an acquaintance) had her DD 2 months before ours and called her xxxx too. No way were we going to change it! It's a common name anyway in the top 20 I think so I wasn't bothered about her being "unique".
Edit: and as she wasn't a good friend I couldn't give a toss if she was offended lol!!!!!!