GRAY SKIES: Socialites, celebs and industry sorts sipped drinks at the DKNY Sun Soiree held at the Dream Downtown’s outdoor bar, the Beach, in New York on Tuesday, despite some decidedly un-beachy weather. Under a threatening sky, waiters served mini burgers and tuna tartar in sesame-encrusted cones to guests who mingled poolside and tried on DKNY sunglasses. Katie Cassidy, Kellan Lutz and Jessica Szohr were in attendance as was eldest Jonas Brother Kevin Jonas, who hovered in the VIP corner with his wife, Danielle Deleasa. Olivia Palermo, a table away, sat alone. Looking a bit preoccupied, the socialite and former reality star, told WWD that she was getting ready to go on vacation to Berlin, a place she often visits with her German boyfriend, Johannes Huebl. Wearing a DKNY dress and sandals adorned with hot pink and fuchsia feathers from the Stuart Weitzman Young Hollywood Cares Collection for cancer research, Palermo said: “I’m working on a blog coming out in August.” Aptly named oliviapalermo.com, the site will be “travel-focused” and be about fashion, emerging designers, accessories, shopping and “everything that I love,” she said.