Singer and new mother Christina Aguilera made her first public appearance since giving birth to her son Max. On Tuesday, Aguilera promoted her new DVD "Back to Basics: Live and Down Under" by signing autographs at a Best Buy store in West Hollywood.

Aguilera, 27, gave birth to her first child, Max, on January 12. The father is Aguilera's husband, music-executive Jordan Bratman.

Aguilera also joined Ryan Seacrest on his radio show on Tuesday and told Seacrest that it is an exciting time in her life. According to People Magazine, the singer said, "I'm very excited [about] this whole incredible thing that's taken place in my life, between the pregnancy and the birth. I've been brainstorming for the last nine months of my pregnancy. This next album will have a whole new me. A different me."

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