Sugarland's Jennifer Nettles has received doctor's orders to rest her voice for the next week due to complications of vocal strain and over-use related to the health issues the singer has been battling since January. Sugarland has had to cancel a tour date in Sandy, Utah last night, as well as shows in Primm, Nevada tonight and Phoenix, Arizona tomorrow. The Primm show will be postponed until August 6. It has not yet been determined whether the Sandy and Phoenix shows will be rescheduled. Look for Sugarland's "Love On The Inside" tour to kick back in gear on July 30 in Bend, Oregon. To see a video message from the duo, you can visit sugarlandmusic.com.