Miley Cyrus is thriving nearly one year after her split from Liam Hemsworth. The 27-year-old singer's ex filed for divorce last August, which kicked off «a huge year with both tough challenges and big changes for Miley,» a source tells ET.«Miley and Liam spoke very little after their separation and any communication was more about making decisions regarding plans and property,» the source says. «They haven't been in touch in months and it has been for the best because they have both needed this