The singer looked fab in a low-cut chocolate brown number, bright red lipstick and killer heels as she promoted her new DVD Back To Basics Live And Down Under at a Hollywood store.
And it seems Christina's keen to get back to work - telling pals she's itching to record new songs.
'I've got so much in my life to write about,' she tells The Sun.
The 27-year-old delivered Max Liron via Ceasarian section at the Cedars-Sinai Medical Center on the 11 January with hubby Jordan Bratman by her side.
Nicole Richie gave birth on the same day to daughter Harlow Winter.
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