Christina Aguilera, 43, looks very slim in a T-shirt and kinky boots as she rehearses for Vegas show... after losing ...
Christina Aguilera showcased her newly slender figure in behind-the-scenes images shared to Instagram on Monday. The 43-year-old singer was in a white T-shirt and black kinky boots. She appeared very thin in the skimpy look after she said she lost 50lbs …