Abs from the block! Jennifer Lopez shows off her taut tummy in black crop top as she enjoys dinner with her twins Emme and Max

Don't be fooled by the rock hard abs that she's got, Jennifer Lopez is a hot mamma from the block.

At 45, Jenny certainly has the body of a woman half her age and she isn't afraid to show it.

She proved that Monday night when she showed off her taut abs as she headed out to dinner with her six-year old twins Emme and Max.

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Abs central: Jennifer Lopez shows off her toned tummy at dinner in Beverly Hills

Abs central: Jennifer Lopez shows off her toned tummy at dinner in Beverly Hills

Family time:The 45-year old enjoyed dinner with her twins Emme and Max

Family time:The 45-year old enjoyed dinner with her twins Emme and Max

Wearing a black crop top, Jennifer had her toned tummy on display, but disguised her famous derriere in a pair of baggy cropped trousers. 

In addition to her fit physique, the singer added a dash of sex appeal with a pair of stunning beige high heels. 

Her famous derriere was the center of attention in the aptly-titled music video, Booty. 

LA life: The family ate at La Conversation in Beverly Hills on Monday night

Helping hand: The hot mamma helped her children decide on what food to eat

LA life: The family ate at La Conversation in Beverly Hills on Monday night

LA life: The family ate at La Conversation in Beverly Hills on Monday night

Chanel darling: Jennifer carried a designer quilted handbag with fringing
Chanel darling: Jennifer carried a designer quilted handbag with fringing

Chanel darling: Jennifer carried a designer quilted handbag with fringing

She loves her booty! Jennifer Lopez's fantastic bottom was put on full show in a pair of loose-fitting trousers that nipped at her slim waistline as she stepped out of her car in Beverly Hills on Monday

She loves her booty! Jennifer Lopez's fantastic bottom was put on full show in a pair of loose-fitting trousers that nipped at her slim waistline as she stepped out of her car in Beverly Hills on Monday

She wore her thick and luxurious mane in a glamorous style that featured loose and gorgeous waves.

Meanwhile, the ever-busy Waiting For Tonight singer - who is currently filming the 14th season of American Idol - will soon be starring on an NBC TV show entitled Shades Of Blue.

Jennifer will portray a detective who is plucked by the FBI to work undercover in the agency's anti-corruption task force.

Ab-solutely! Jennifer showed off her eye-catching toned waistline as she adjusted the waistline of her trousers

Ab-solutely! Jennifer showed off her eye-catching toned waistline as she adjusted the waistline of her trousers

Toned and trim: The Waiting For Tonight singer clearly has made fitness a priority in her life

Toned and trim: The Waiting For Tonight singer clearly has made fitness a priority in her life

Gorgeous: Lopez's honey-hued mane featured loose and glamorous waves that were brushed away from her lovely face

Gorgeous: Lopez's honey-hued mane featured loose and glamorous waves that were brushed away from her lovely face

The series will be directed by the Academy-Award winning director Barry Levinson, Deadline has exclusively reported. 

Barry has helmed classics Rain Man and Good Morning, Vietnam. 

Soon, Jennifer's film The Boy Next Door will hit US theatres on January 23. 

Jennifer stars as a teacher who becomes the object of an obsessive teenager's affection after she has a one-night affair with him. 

Clearly keeping busy: The chart-topper will soon appear on TV in Shades of Blue, and will also be seen on the big screen in the 2015 thriller The Boy Next Door
Clearly keeping busy: The chart-topper will soon appear on TV in Shades of Blue, and will also be seen on the big screen in the 2015 thriller The Boy Next Door

Clearly keeping busy: The chart-topper will soon appear on TV in Shades of Blue, and will also be seen on the big screen in the 2015 thriller The Boy Next Door

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