Heidi Klum channelled Marilyn Monroe during her recent appearance as she embraced a billowing dress. The 52-year-old attended Calzedonia’s Summer Beachclub event at km 689 Cologne Beach Club on May 26. The supermodel stunned in a brown maxi dress that featured a softly ruched design that gathered down the bodice. The garment boasted a plunging neckline that was embellished with a gold hardware accent. Heidi layered a leopard-print Calzedonia bikini top beneath the halter-neck dress for a daring twist and finished the ensemble with a pair of nude pointed-toe heels. She added a stack of gold bracelets and chunky statement rings to her look. Heidi’s luscious locks were styled into her signature bombshell curls while her makeup oozed soft glam, courtesy of a smoky eye and glossy lip. In one photograph, Heidi held up her dress and swished it around her silhouette for a billowing effect.  © Getty ImagesHeidi Klum wore a billowing brown dress The playful pose was reminiscent of Marilyn Monroe’s white fit-and-flare gown from the 1955 classic, The Seven Year Itch. The …