Supermodel Karolina Kurkova can sure stick to her talking points. At the launch party for Victoria's Secret's Very Sexy makeup in a Chelsea loft the other night, the 22-year-old Czech seemed poised to give Lowdown a huge scoop about how to stay beautiful. But then she said, "My top secret Use the right makeup. Have fun with makeup." Makeup - gotcha. Meanwhile, her fellow product-pusher, 25-year-old Brazilian Alessandra Ambrosio, declared: "Top beauty secret To sleep eight hours. Sleeping." Zzzzzzzzzzzz.