Christina Aguilera keeps shrinking before our very eyes.

The singer put the "little" in "Little Black Dress" on Wednesday night -- showing off her slim physique on "The Tonight Show with Jay Leno."

With her cleavage on display and rocking short hair and a bright red lip, the judge of "The Voice" revealed she feels "sexier than ever" at 32 because "you know what you want."

The former "Mickey Mouse Club" star went on to talk about her recent spread for Maxim magazine, saying "I like expressing myself in a sexual way ... it was all about appreciating the woman I've become."

We think she looks great and seems genuinely happy these days. What do you think of the woman she's become?

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