adele postpones tour
She performed in Denver on Saturday, but her show in Salt Lake City on Sunday was canceled at the last minute "when her illness worsened."
The tour will resume June 4 in San Francisco.
Performances in Seattle, Portland, Ore., and Vancouver, British Columbia, were also postponed and will be rescheduled.
Adele's new album, "21," has been at the top of the music charts in the U.S.
