Christina Aguilera strips down for nude bathtub photo shoot

It's warm in here, right? Anyone else feeling warm?

Christina Aguilera heated up Instagram this week with a series of nude bathtub photos -- and the 37-year-old mom of two could pass for her 20-year-old "Dirrty" self!

Her platinum blonde locks submerged, the star used her hands and some strategically-arranged bubbles to keep things relatively Instagram-appropriate.

The songstress told fans in January that new music is on its way, leading some fans to suggest that the nude shoot is a nod to her hit album Stripped.

We're waiting, Xtina!