Soon after, Louis Réard created a competing two-piece swimsuit design, which he called the "bikini". He noticed that women at the beach rolled up the edges of their swimsuit bottoms and tops to improve their tan. On 5 July, Réard introduced his design at a swimsuit review held at a popular Paris public pool, Piscine Molitor, four days after the first test of an American nuclear weapon at the Bikini Atoll. The newspapers were full of news about it and Réard hoped for the same with his design. Réard's "bikini" undercut Heim's "atome" in its brevity. His design consisted of a two triangles of fabric forming a bra, and two triangular pieces of fabric covering the mons pubis and the buttocks connected by string. When he was unable to find a fashion model willing to showcase his revealing design, Réard hired Micheline Bernardini, an 18-year old nude dancer from the Casino de Paris. He announced that his swimsuit, with a total area of of cloth, was "smaller than the world's smallest bathing suit". Réard said that "like the bomb, the bikini is small and devastating". Fashion writer Diana Vreeland described the bikini as the "atom bomb of fashion". Bernardini received 50,000 fan letters, many of them from men.