DOWN THE AISLE: Move over, Oprah. Martha Stewart is good for the occasional freebie too. After catching a fashion show of wedding dresses presented by the new e-commerce site The Aisle, 180 guests at last Tuesday’s “Martha Stewart Show” were given $100 gift certificates for the members-only site and $72 Rachel Leigh Gatsby-inspired earrings. David Yassky, one of The Aisle’s co-founders, wound up chatting on-air with the talk show maven, thanks to Darcy Miller, editorial director of Martha Stewart Weddings. The rest of his crew — Shara Levy, Mark Ingram and Deborah Moses — was planted in the audience for moral support. Stewart’s fans got a sneak peek of Isaac Mizrahi’s capsule collection, as well as gowns from Amsale, Elizabeth Fillmore, Angel Sanchez and Lela Rose. Eyeing the abbreviated overskirt on Mizrahi’s peplum dress, Stewart couldn’t resist mentioning how it would provide great coverage for a shotgun wedding.