Sources close to Ms Ellis-Bextor say that she cannot believe her comeback and is said to be super excited about belting out the 2001 song at the event in March.
Sophie Ellis-Bextor charmed audiences in London on Tuesday when she performed at a charity evening to highlight loneliness in the disabled community, called ABLE2UK.
Sophie Ellis-Bextor has enjoyed a career boost in recent weeks after her hit Murder On The Dancefloor had a resurgence thanks to movie Saltburn - but she may have some competition.