By Li-mei Hoang LONDON (Reuters) – British fashion designer and former Spice Girl Victoria Beckham said life as a working mother is a struggle but she relishes the challenge and plans to expand her empire with a retail store in London. As mother to three boys – Brooklyn, 14, Romeo, 10, and Cruz, 8 – and to 21-month-old daughter Harper, Beckham said balancing her family life and career was a constant juggle. "The children are my priority and always have been and always will be so it's a little bit of a juggling act," she told the Vogue Festival at London's Royal Festival Hall on Sunday. …
