MINKOFF HITS THE EAST END: Rebecca Minkoff will be popping into Montauk, N.Y., this summer. The designer, known for her casual chic designs, will open a pop-up shop at the Solé East Resort on June 30. The shop will remain open through Sept. 4. The 550-square-foot boutique will be situated in the resort’s main floor and will carry ready-to-wear, handbags, footwear, small leather goods and sunglasses. The collection, which retails from $150 to $795, features items designed for a summer beach weekend. The shop will house Minkoff’s spring-summer Desert Love collection that includes cocktail dresses and bright colored Becky jackets. Handbags include those in woven leathers, laser cutouts and stripes.