Hedge funder Richard Perry — who backs Barneys and has bought 7.3 percent of J.C. Penney — and his designer wife, Lisa, will host a bash Saturday for 500 at their Hamptons home benefiting the Breast Cancer Research Foundation. The North Haven fete for the annual Hamptons Paddle & Party for Pink will follow a paddle board race in Sag Harbor. Surfer Laird Hamilton and his volleyball babe wife, Gabrielle Reece, will be special guests, and Aerin Lauder, Donna Karan, Katie Lee and Carolyn Murphy are also expected. Larry and Maria Baum are co-chairs for the event, and an auction through CharityBuzz includes paddle boards designed by Martha Stewart, Tory Burch, Cynthia Rowley, Ross Bleckner, Nicole Miller and more.