Audrina Patridge, star of ‘The Hills,’ is mourning the death of her 15-year-old niece; the cause of death has not been revealed.

Audrina Patridge, who rose to prominence in The Hills for six seasons between 2006 and 2010, recently revealed that her 15-year-old niece, Sadie Loza, passed away.
The adolescent girl was born in 2008 to