According to (http://www.babynames.ch/Info/Name/naJulia2) Júlia in 2015 currently ranked 3rd place in Brazil, in 2014 it remained 3rd place and in 2013 and 2012 Júlia ranked at 2nd place, in 2011, 2010 and 2009 Júlia reached 1st place, remaining at that rank for three years straight.
I think this name suits a Brazilian young girl well, especially one of Portuguese and Japanese descent and the name would be good for a older sister of a boy named Caio.
My name is Julia and I'd like to state for the record that my birthday is May 22nd. This means that it falls on like 4 of the name days in different countries. Pretty crazy stuff!