About 5'000 bulbs will be installed above the promenade between Brighton's two piers by road maintenance company Colas to mark the city's annual Pride festival.
Work will begin on Monday and the lights will be glowing pink from August 5 to 7.
Brighton and Hove city councillor Paul Elgood' chairman of Brighton and Hove's equalities forum' said: "Last year's lighting of the Pavilion in pink for Pride drew national attention and this builds on that success.
"There can be no better symbol for the city in Pride week than to light our seafront in pink.
"Pride has become one of the city's most important events and the lighting will complement the parade."

