I am going to the hairdresser's tonight because I dont want the style of her hair but the dark colour as it still has blonde bits in the light. I searched online for photos to show my hairdressers and got quite a collection from going to google and typing in "hollyoaks babes" in the search engine and once you are on that website select "galleries" or one I found good was "latest" which shows stills of the all episodes last week from Hollyoaks which featured alot of Jessica so there were quite a few stills there. I just copied and pasted the ones I wanted onto MS Word because I could enlarge them on there to print off for my hairdresser.
Furthermore, if you do a google search for "Soap Awards 2007" there are numerous sites that come up which feature her, her real name is Jennifer Biddall, and her hair looked great there too and again you can copy and paste to enlarge to print off.
Hope this helps!