Winners of TV show Got to Dance Chris Donnelly and Wes Clack will light up Bognor Regis seafront.
The Observer-backed event will take place on Saturday, April 16 - and is also sponsored by Bognor Regis Town Council and supported by Arun District Council.
Chris and Wes will be flicking the switch instead of Britain’s Got Talent finalists Stavros Flatley.
The 20-year-old dance teachers from Hayes, West London, shot to fame in February when they entertained the masses with their comedy capers on the Sky1 programme hosted by Davina McCall.
Their unique blend of hip-hop, street and abstract moves impressed judges Ashley Banjo, Kimberly Wyatt, and Adam Garcia.
Greg Burt, the lights technical officer of the Bognor Seafront Lights volunteers, said the switch on would begin at 8.10pm with a fire juggling and spinning show followed by a performance by The Wonder Girls.
The lights will be turned on by Chris and Wes with town mayor Sandra Daniells.