Jennifer Lopez is famous for parading her curvaceous body in bikinis, while traveling the world on tour.

But today the 42-year-old entertainer and mother-of-two got up from her poolside lounge chair and jumped into action, joining her boyfriend Casper Smart and two children for a frolic in their luxury Miami hotel pool.

Rather than taking a dainty step into the pool, J-Lo opted for a dramatic canonball jump, making a huge splash as she leaped in the water wearing her sunglasses and a striking yellow bikini.

Geronimo! Jennifer Lopez does a cannonball jump into her hotel pool in Miami, Florida, today

In at the deep end: The former American Idol judge makes impact with the water…

Action woman: Lopez made a big splash after leaping in

J-Lo was quickly joined by her daughter Emme, who clung to her mother in the pool.

Wearing a frilly red two piece, the four-year-old then climbed on the shoulders of Casper, J-Lo’s 25-year-old backing dancer boyfriend.

Casper proceeded to balance the delighted child on his hands in a number of different positions, showing Emme has clearly inherited her mother’s balance and coordination.

My go! Lopez’s daughter Emme also made a leap of faith herself

In deep: Lopez was quickly joined by her daughter Emme, who clung to her mother in the pool

Playing stepdad: Casper Smart carries four-year-old Emme on his shoulders

The muscular 25-year-old had no trouble lifting little Emme high into the air, as her brother Max swam and played nearby.

Before jumping into the water, Lopez lounged poolside next to Casper, chatting to her boyfriend while while watching her children play.

Twins Emme and Maximilian are Lopez’s children by her most recent ex-husband Marc Anthony.

Hold on tight: Emme appears to have a relaxed relationship with her mother’s new lover

Balancing act: J-Lo’s daughter showed some of the same aptitude for co-ordination as her talented mother

Born in February 2008, the twins were introduced to the public in the March 11, 2008 issue of People, for which the magazine paid a reported $6 million.

The photographs of the twins became the most expensive celebrity picture ever taken at the time.

Lopez arrived in Miami earlier in the today, in preparation for what will be the last two performances of her world tour with Enrique Iglesias.

Water baby: The daughter of Lopez and her previous husband Marc Anthony seemed confident in the water

Twins: Maximilian and his sister Emme enjoyed some down time with their mother before her final shows

Settling in: Casper threw a birthday party for J-Lo in July, which apparently went down a treat

The singer made her way to the hotel with her much younger boyfriend and children, as well as a huge entourage in tow.

Lopez has been known to run the risk of many a wardrobe malfunction by parading her famous curves in risqué outfits.

But it was a relatively demure maxi dress that literally almost tripped the 43-year-old entertainer up as she arrived in Miami today.

Relaxing: The Out of Sight actress has just two more shows to perform on the last leg of her tour

The one-year mark: Jennifer and Casper have been dating for about a year

Hooray! Lopez claps as she watches her kids play in the pool, and Casper makes his way to the water

Looking fabulous but somewhat flustered in the heat, J-Lo wore a floor-length black-and-white maxi dress and carried a large white designer J-Lo handbag.

The dancer and recording artist accessorised with large gold hoop earrings and tinted gold sunglasses, and wore her hair in a bun on top of her head.

Good times: Emme, J-Lo and Casper hopped under the shade of an umbrella while in the pool

That’s better! J-Lo was obviously relishing the opportunity for a dip after her flight into Miami

Gun fight! Emme and Max play with water guns by the side of the pool

Little Emme was close behind, also wearing her hair in a bun. She wore matching grey track top and pants and carrying a huge stuffed toy dog.

Casper and Max were also close at hand, Max on the shoulders of a male member of the entourage.

In January this year, Lopez returned as judge on the eleventh season of American Idol, earning a reported $20 million.

Toyboy: The age difference between the 25-year-old dancer and his 43-year-old girlfriend doesn’t seem to be worrying either of them

The season was not as successful as its previous ten seasons, however, and for the first time it was not the most-watched prime-time television show. J-Lo announced she was leaving the show in mid-July.

News came this week that Lopez will be one of the first guests on Katie Couric’s new talk show, in a line-up which includes Barbara Streisand and Jessica Simpson.

Couric’s new show Katie, which launches September 10, is expected to talk to J-Lo about life after American Idol.

The Out of Sight actress, who recently announced her resignation from American Idol, said she will be focusing on her film career in the future.

A different kind of wardrobe malfunction: Emme stpped on her mother’s dress as they arrived at their hotel

Big entourage: The singer and her crew will no doubt be happy to have only two more shows left

Mommy’s boy: Jennifer carries her son Max to the hotel after arriving in Miami

With multiple tour buses in the background, hotel staff worked hard to bring endless piles of tour luggage towards the hotel.

She told The Associated Press: ‘I do miss doing films. I feel like the last two years with Idol, I’ve really, really focused on, you know, my music. … It was all kind of very synergistic, it worked really well together.

‘But [film] is something that I really loved, it’s how I kind of started in this business, and it doesn’t leave you. I am an actress, I need to do that, too.

In 2013, Lopez will star in the thriller Parker, a film adaption of Donald Westlake’s book Flashfire.

Hard work: Travelling isn’t easy at the best of times, but try kids and a huge entourage in tow

Baggage heavy: No doubt the bell hops were expecting a tip at the end of this little run