'Virgo season is upon us,' the 41-year-old mother-of-three - who boasts 416.8M social media followers - wrote via Instastory.
'This tour has been such a joy and as we approach the last month, my birthday wish is to celebrate with you wearing your most fabulous silver fashions to the shows August 23-September 22!
'We'll surround ourselves in a shimmering human disco ball each night. Everybody mirroring each other's joy. Virgo season together in the house of chrome. See you there!'