Andrew Marc

_ EXCLUSIVE And you thought the swimming trunks were pricey. Vilebrequin the French luxury swimwear label whose latest designs include hand-embroidered mens shorts that retail for $590 is close to being acquired by New York-based G-III Apparel, The Post has learned. G-III is looking to take the plunge with an offer north of $150 million more than 13 times Vilebrequins Ebitda, or earnings before interest, taxation, depreciation and amortization, said a source briefed on the talks. The lofty price tag signals optimism for luxury sales worldwide despite the economys iffy prospects overall, as the ranks of super-rich continue to