The 64-year-old pop icon took to Instagram on Thursday to update her 19 million followers on her health after suffering a 'serious bacterial infection' as well as to celebrate the 40th anniversary of her debut studio album, 1983's Madonna. Madonna wrote beside a clip of her busting a move to the sound of her hit song Lucky Star, which featured in her debut álbum: βTo be able to move my body and dance just a little bit makes me feel like the Luckiest Star in the world!β