LeAnn Rimes — RESURFACES After Checking Into Treatment Center

0908_leann_rimes_splash
LeAnn Rimes
belted out some tear-jerking tunes last night … marking her first public appearance since checking herself into a treatment center last month.

The country singer took a break from her 30-day recovery center — where she checked in on Aug. 29 for “stress and anxiety” — to perform at the Eau Claire Regional Arts Center in Wisconsin.

Rimes played a full 70 minute set despite her recent breakdown — which stemmed from a public battle with a group on Twitter … who kept blasting Rimes for her relationship with Eddie Cibrian

The singer says she”ll return to the treatment following a few mid-western concerts.