Who needs a reason to shop? Especially when it's for a good cause. So here are four fashionable ways to help raise awareness and benefit breast cancer research. Fergie Hope shoe, $45 1. HauteLook and the Breast Cancer Research Foundation are hosting a Pink Weekend Sale Sept. 30 to Oct. 2. Items on sale range from lip gloss and a flat iron to designer jewelry and handbags. 2. Step out in style wearing the Hope shoe from the Fergie Footwear Fall 2010 collection. Fergie's Hope shoe ($45; half its original retail price) will be available during the QVC presents "FFANY Shoes on Sale" event on Oct. 15th. All the net proceeds of the Hope shoe -- and the 100,000-plus pairs of shoes donated by footwear companies to QVC -- go to breast cancer research. To date "FFANY Shoes on Sale" has sold more than one million pairs of shoes and donated more than $32.5 million in net proceeds to breast cancer research. 3. Show your support for breast c...