Is that Christina Aguilera?

Christina Aguilera's dishevelled look shocks fans at Michael Jackson show! 

              

after 2011                                                             before 2010                       
christina aguilera michael jackson concert 13christina aguilera golden globes 2010 red carpet 04

christina aguilera michael jackson concert 17Bad hair day? The singer's blonde mane looked matted and unkempt

The 30-years- old singer changed alot since we last saw her.Her perfect siluete and hair were not as it used to be.This curvy girl  it's really not like Christina Aguilera at all,What's wrong with her?