Miss Pearman's body was found by a lorry driver at about 3.50am. She was last seen alive in Rouen Road, Norwich, at 1.15am the same day.
At the time of the initial investigation, DNA samples were taken and loaded onto the national database but no match has yet been found.
Over the years, more than 4,000 people have been interviewed and hundreds of men provided DNA samples for testing.
More top news
The cloudy skies will remain tonight but at least temperatures will stay frost-free.
Norwich City manager Alex Neil admitted his team 'lacked a spark' as they suffered a surprise home defeat to struggling Wigan Athletic.
Cloud will thicken from the north and west this afternoon but it will stay dry.