Ridiculous for a grown women.
Unless she is fabulously beautiful, wonderfully cool, charmingly kooky, a super model, international fashion designer or world renowed artist.
Then she may just about carry it off.
If however she turns out to be a doctors receptionist, teacher, civil servant, nurse or similar,which let's face it are the more leikely options,then it's just a bit silly and embarassing.
use it as a nickname.
Claudia is wonderful.For a fashion designer and a politician.