The legendary performer will take to the stage at the Eden Project on July 21, joining Lionel Richie and the Script as a headliner for the concert series.
Tickets go on general sale at 4pm on January 29. Further acts for the series are to be announced soon.
Ross will also play a series of US dates starting in February, followed by a UK and Ireland tour in the summer, which includes three huge shows at London's O2 Arena.
Diana Ross Upcoming Tour Dates are as follows
Thu June 25 2020 - CORK Live At The Marquee
Fri June 26 2020 - DUBLIN IMMA Royal Hospital Kilmainham
Tue June 30 2020 - LEEDS first direct Arena
Wed July 01 2020 - LIVERPOOL M&S Bank Arena
Fri July 03 2020 - MANCHESTER Arena
Sat July 04 2020 - GLASGOW SSE Hydro
Mon July 06 2020 - BIRMINGHAM Arena Birmingham
Wed July 08 2020 - LONDON O2 Arena
Thu July 09 2020 - LONDON O2 Arena
Sat July 18 2020 - LONDON O2 Arena
Sun July 19 2020 - MANCHESTER Arena
Tue July 21 2020 - ST AUSTELL Eden Project
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