Ahhh, a summer weekend in the Hamptons involves beach time, backyard BBQs for backyard-starved New Yorkers and a star-studded event. This past Saturday afternoon (July 11), Catherine Malandrino threw a summer soiree with hostess Reshma Shetty (from the new show “Royal Pains” on USA) at the line’s East Hampton store. Guests included Orlando Bloom (sans girlfriend Miranda Kerr) who popped in to early, Darrell Smith from HBO’s “The Wire” and PR-maven/socialite Susan Shin. A portion of all purchases from the event went to benefit CANCER101. We’re all for guilt-free shopping.