Christina Aguilera went super-casual Tuesday as she arrived at LAX airport, with her son, Max Bratman. The former "Voice" coach traded in her usually glammed-up attire and hair for a black sweatshirt and New York Yankees cap.

 The 32-year-old singer recently showed off a slimmer, fitter frame at the fourth season premiere of "The Voice" and has spoken openly about her appearance in the past. "I've been on all spectrums [weight-wise], I've been in this [business] for a long time ... You can never be too much of anything," Aguilera said at the Television Critics Association conference in January 2012. "You can never bee too perfect, too thin, too curvy, voluptuous this that. I've been all sides of the spectrum as far as any female in this business."