It's all in a day work for J-Lo as she shows off her raunchy moves for new advert before taking a break to cuddle beau Casper

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By Marissa Charles

Still together: Jennifer Lopez and her toyboy lover Casper Smart on the set of her new music video in Los Angeles on Monday

When it comes to keeping the men in her life happy Jennifer Lopez seems to have the knack.

At the weekend the 42-year-old actress and singer publicly held hands with her estranged husband Marc Anthony at the Winter Television Critics Association Press Tour in Pasadena, California.

A few days later she has been spotted canoodling with her 24-year-old lover Casper Smart on the set of her new advert for Brazilian beer Brahma.

The mum-of-two seemed happy and carefree as she ran through her dance moves with her choreographer on the Los Angeles set on Monday.

Wearing tight fitting leather trousers, high-heeled boots and a red top, the curvaceous singer tossed her hair and shimmied her hips.

At one point she seemed to be channeling the late Michael Jackson as one hand rested on her head while another was near her groin.

Channelling MJ: The singer's dance moves were reminiscent of those favoured by Michael Jackson

Sexy lady! Jennifer donned a red V-neck T-shirt and tight black leather trousers for the advert

Getting the moves right: Jennifer whipped her hair around as she had a wind machine trained on her for the ad

Jennifer's boyfriend watched from the sidelines and was seen filming his girlfriend with his iPhone.

When the Out of Sight actress took a break he was on hand to supply her with cuddles.

Her three-year-old daughter Emme also visited the set.

Jennifer is in the process of ending her marriage to the child's father, singer Marc Anthony.

The couple have been married for seven years and, after their sudden split, their relationship was thought to be acrimonious.

But the American Idol judge is still professionally tied to her third husband and insists that they are still friends.

Dance with me tonight! Jennifer was joined on the set of the video by a man who appeared to be the choreographer

Steamy: The singer and her backing dancer, boyfriend Casper, share a quick cuddle behind the scenes

Marc, 43, and Jennifer are promoting a new Latin American TV talent show called Q'Viva! - The Chosen.

Asked by a journalist what it was like to work with her ex again, the Maid In Manhattan star said: 'Same as it was any other time we worked together.

'We have a great time working together.'

Reunited: They are getting a divorce but Jennifer appeared with her estranged husband Marc Anthony at an industry event at the weekend

Jennifer isn't the only one who has been moving on and Marc also has a new girlfriend.

The 43-year-old salsa singer is dating Venezualan model Shannon De Lima, and has taken to Facebook networking declare his adoration for her.

He added a photo to his official page, which showed him kissing De Lima with his arms tightly wrapped around her.