Westfield Plenty Valley is a shopping centre in the suburb of Mill Park in Melbourne, Victoria, Australia. Until its expansion in 2008, it was known as Plenty Valley Town Centre and hosted one major store (Coles Supermarket), and approximately 22 specialty stores.Westfield commenced a re-development program for the centre in 2007, expanding the area to 53,086 m2,at a cost of approx A$200 million.