Avery was last seen by RTD security while she was on her way to the 16th Street Mall.
She was wearing an off-white mini-skirt, a brown leather-type vest and was carrying a black-and-white hula hoop.
Avery's family says she was last seen with an unidentified white or Hispanic man with dreadlocks. He was wearing overalls with patches and a cap with patches on it as well. The man had a tattoo on his hand or wrist area of something that looked like a chemical molecule. He supposedly plays drums and possibly travels with a brown or black dog.
If you see the man or Avery, contact the Denver Police Department as soon as possible by calling 720-913-6653 or 720-913-2000.
(KUSA-TV © 2012 Multimedia Holdings Corporation)