Retailers such as Marks & Spencer, Miss Selfridge, French Connection, LK Bennett and All Saints are all displaying collections, along with designer boutiques such as My-Wardrobe, Browns and Matches.
Robert Gorton, chief executive of LynkU.com, said: "We are looking forward to providing the readers of ThisisLondon with a one-stop portal of fashion with the greatest range of fashion shops and designers from the high street and online.
"In addition to keeping the readership up to date with all the latest fashion offers, we will be arranging some exclusive promotions in the lead up to Christmas."
LynkU claims to display fashion for the greatest number of fashion shops and boutiques in the UK. It also provides information about which shops and designers are holding sales, both on the high street and online.
Gemma Sixsmith, commercial partnerships account manager at Associated Newspapers, said: "We are delighted to be working with LynkU.com, widening our ability to provide great deals and value added service to our readers."