Balance is a big theme with Victoria Beckham. As a pop star who became a WAG who became a high-fashion designer, her life and work have always been a balancing act of contrasts: the popular and the exclusive, the sexy and the serious, the flamboyant and the sophisticated. It is, in essence, the secret to her success. Like many other brands at this logomanic moment in time, this season Beckham is launching her own monogram. It’s a graphic but clean infinity V.B., which the designer emblazoned across viscose twill dresses, blouses, and trousers in her pre-collection. She referred to it as “subtle, elegant, and chic,” a trinity key to Beckham,…