Yesterday, the former X Factor judge and former pop princess attended Elton John's 21st annual AIDS Foundation Academy Awards Viewing Party in a plunging, cleavage-baring, sparkly black Michael Cinco Couture gown and Saint Laurent shoes. She also had brand-new chestnut-brown tresses (plus bangs) covering those cap-sleeved shoulders. The neckline was a bit distracting. But at least the brunette locks did make the 31-year-old singer look reminiscent of her younger teenage Baby One More Time glory days.