Leann Rimes has left rehab after one week to perform a show in Wisconsin.

The US country star, who last week checked into a 30-day program to deal with anxiety and stress issues, revealed the news in a post on her official blog yesterday:

"I'm on a plane headed to see all my fans in Wisconsin tonight! I can't wait to play, I'm so ready. I've got a zillion fashion mags, my journal, ipod, water and a butterfinger. I'm all set :)

"Seems I've developed a sweet tooth after turning 30. If that's all that comes with 30, I think I'm settinling [sic] in pretty well. So far, the new decade is treating me great! Hope you all have a fantastic weekend and I look forward to seeing all of my fans and friends over the next 3 days. -Le."

According to Rimes’ rep, the 'How Do I Live' singer had always planned to fulfil her commitments and then report back to the treatment centre.