The brand will have a furnished make-up room in O'Connor's "Model Sanctuary". The M&S model – who is also vice chairwoman of Fashion Week has set up the Sanctuary to provide stressed-out models with an area to relax between shows and receive fitness and nutrition guidance.
Isabelle Regis, vice president of marketing at Rimmel London, said the partnership will provide the "perfect way to build a relationship with the next generation of make-up artists and fashion models".
Student make-up artists will also get the opportunity to meet and work with up-and-coming models through the Sanctuary.
The partnership has been overseen by JWT London, Rimmel's global advertising and digital agency.
London Fashion Week runs from the 17th to the 22nd September.