Christina Aguilera shows off her physique in skin-tight black

Christina Aguilera's low-cut swimsuit shows off her incredible figure

Christina Aguilera poses in chic black satin as she preps for concerts with LA Philharmonic at historic Hollywood Bowl

Christina Aguilera looks straight out of Grease in skintight leather look

Christina Aguilera shows off '40-lb' weight loss in nude corset as ageless star performs in Las Vegas

Christina Aguilera flaunts her major weight loss in sheer bustier and mini-skirt at Clarins launch party in LA

Christina Aguilera sparks a fan frenzy as she arrives at her Melbourne afterparty following rained-out performance at Always Live festival

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Christina Aguilera Rocks Black Leather Jacket and Lip Print Mini Skirt at “Jimmy Kimmel Live!”

Christina Aguilera's Gothic, All-Leather Look That Shows off Her Mile-Long Legs Is Sending Fans Into a Frenzy