Mindy McCready at the 2008 WSOP Ladies Event at the Rio Hotel and Casino. Las Vegas, Nevada - 08.06.08

The fallen star, 32, was freed at 9am on Friday (31Oct08).

McCready voluntarily agreed to serve time after she was arrested for prescription drug fraud in June (08) - an incident which was considered a violation of her probation relating to a 2004 drug arrest. That conviction led to McCready losing custody of her two-year-old son, Zander.

But she managed to secure an early release by earning credit for helping keep the jail clean.

Lieutenant Mark Wainwright, spokesman for Williamson County Sheriff's Department, says, "Good behaviour, a system that credits two days for each day served, and her job as a pod janitor here - all of that reduced her sentence."

Source: WENN