Lady Gaga's artRAVE The ARTPOP Ball concerts in Vancouver and Seattle have been rescheduled after the singer announced last night she had developed severe bronchitis.

The controversial singer's Vancouver concert has been moved from Friday, May 30 to Saturday, August 9 at Rogers Arena.

Her May 28 performance in Seattle has been moved to Friday, August 8 at Key Arena.

Updated information on the tour is available at Live Nation or on Lady Gaga's website.