"It's the most important dress a woman can wear," declared Carolina Herrera. The garment in question? The wedding gown, an item unrivaled in its ability to elicit the kinds of oohs, ahhs, and tiny gasps heard at last night's preview of Herrera's new bridal collection at her Madison Avenue boutique. Former Vogue fashion assistant and current star of TLC's "What Not to Wear" Stacy London, who co-hosted the By Invitation Only event for American Express Platinum Card members, was as enraptured as her audience. "Doesn't it make you want to get married again…or soon?" she laughed. Both Herrera and London agreed that in addition to a fabulous wedding gown (fingers crossed), every woman should also have a few key pieces in her wardrobe: white shirt, black pencil skirt, and a suit, either skirt or pant. That last item got us thinking. What would the two like to see the pantsuit-loving presidential hopeful Hillary Clinton wearing? "Something else," London quipped. "No matching necklaces and earrings. And red is not her color." Herrera conceded that Clinton ought to indulge her feminine side a bit more: "She's a handsome woman. You don't have to dress like a man. You can certainly be glamorous AND powerful." Indeed.