The East Hampton retail scene heats up with permanent locations for Loewe, Zegna, Isabel Marant and Cult Gaia. Cali-chic lifestyle brand Jenni Kayne expanded its presence in Amagansett with a second store in Southampton. Los Angeles-based Merit showroom offers midcentury-modern and contemporary design by the likes of Pierre Jeanneret and Frank Gehry in Southampton. Don’t miss Marni’s summer pop up in Sag Harbor. 20 Main Street, East Hampton, N.Y., 11937. 2-B Main Street, Southampton, N.Y., 11968. 257 County Road 39A, Southampton, N.Y., 11968. 31 Madison Street, Sag Harbor, N.Y., 11963.
