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It seems motherhood has really given singer Christina Aguilera a boost.

The pop star, who gave birth to son Max last month, was looking swell when she popped out for dinner in Hollywood last night.

The 27-year-old singer flaunted her post-pregnancy buxom figure despite being dressed down in a Knicks baseball cap and grey cardigan.

Aguilera is clearly revelling in her motherhood - and her new-and-improved figure.

She has called her bust 'amazing' and gushed in radio interviews about her "incredible" son.

The 'Dirrty' singer said that she and husband Jordan Bratman are revelling in parenthood: "Every week something new happens.

"It's constant changing and he's constantly changing and doing these incredibly cute things - and stinky things."

But there are reports that not everything in her life is not as uplifting.

According to Perezhilton.com, she is said to be fuming about the lack of interest in her recent People magazine cover in the U.S. and fired members of her team after sales of copies featuring the star and her son sold less than the normal amount.

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