Christina Aguilera looks bustier than ever

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.

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

Busty: Christina Aguilera's fuller figure was on prominent display as she went out for dinner in Hollywood last night

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.

Promoting her new dvd set Back to Basics: Live and Down Under in Hollywood earlier this month

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.

Christina and Max: The singer poses with her son for the cover of Hello and People magazine

It was reported that she sacked her PR firm and others over the blunder.

Aguilera and Bratman married in 2005 and Max was conceived during the U.S. leg of her 2007 world tour.