David Beckham has penned a heartfelt tribute to his "beautiful" wife Victoria as the Spice Girls icon celebrates her milestone 50th birthday.The football legend took to social media to share his admiration and pride for Victoria's incredible journey over the years from pop sensation to fashion mogul. Victoria shot to fame with The Spice Girls with the chart-topping hit Wannabe in 1994 and has since conquered the worlds of music, fashion, and entertainment.