Kim Richards may be headed for even more trouble ...

The troubled reality star had been looking to get her hands on the anti-anxiety drug Xanax, according to TMZ. If this is true -- it may jeopardize her sobriety -- and her pending plea deal.

The 50-year-old, who has already been arrested twice this year, reportedly visited a smoke shop in the Sherman Oaks three times last week in order to get some of the pills, the site claims.

TMZ says that smoke shop employees turned the reality star away, who was claiming she needed the drugs for a foot injury, since the store sell the drugs.

This report comes right as the deadline for her attorney to confirm the plea deal n her April 16 arrest at the Beverly Hills Hotel. The deadline for the paperwork is today and the plea deal stipulates that she serve three years probation, take 52 AA classes, complete 30 days of community labor and stay away from the Beverly Hills Hotel.

Her attorney has request that she receive community service instead of community labor.