Whether it's Jimmy Choo shoes, antique clothing or even old copies of their favorite magazine, most women will admit to collecting something in their lifetime. But when does it turn from hobby into hoarding--a life-altering obsession--and mental illness?

In Part One of our two-part series, we'll meet Jennifer, a wife and mother of two, who says says that the thousands of things she has amassed from flea markets, thrift stores and the streets are treasures. Her 13-year-old daughter, Betty, disagrees and thinks her mother's obsession is just plain embarrassing.

Tomorrow, in Part Two of our series, we get a more in depth look at how debilitating hoarding can really be--sometimes resulting in serious mental illness. We'll meet a young woman whose mother collected so much stuff that she was literally pushed out and became homeless due to her severe case of compulsive hoarding disorder. Things got so bad that the city threatened to take her mother's home away, so she and her brothers stepped in. What happened next was something no one expected. Also tomorrow, an expert clues us in on what's really happening in the lives of hoarders. How can you tell if someone you love is just obsessed with collecting--or if they are suffering from a very real case of compulsive hoarding disorder?