Kate Upton In A Slinky Bikini

Kate Upton slips into a slinky bikini on the set of The Other Woman

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As summer approaches it seems as though Kate Upton will do anything to stay in a swimsuit.

The supermodel slipped into a particularly tiny two-piece as she filmed an ocean-front scene for her latest film The Other Woman in the Hamptons, New York on Sunday. 

The stringy bikini is nearly identical to the one she famously donned on the cover of last year's issue of the Sports Illustrated swimsuit issue -- making her a household name.

She's got the look: Kate Upton played to her strengths as she modelled a barely-there bikini on the set of The Other Woman in the Hamptons, New York on Sunday

Kate -- who just turned 21 on Monday --  walked about on the sand between takes and kept to herself as crew members rushed to shoot the scene before sunset. 

At one point she embarked on a run, sprinting away from the camera as her straightened blonde hair flowing in the wind.

Upton could barely contain herself in her white bikini, and no doubt when she began her beach run, a sports bra would have been more ideal to strap up her ample cleavage.

Perfect pose: During one take, the supermodel angled her body for maximum effect

Hard at work: Kate has been busy filming all week, even as she celebrated her 21st birthday on Monday

After spending the day on the sand the Kate opted for a more covered-up look and shared a smiling snap on her Twitter account wearing a figure-hugging red dress.

She styled her blonde hair parted to the side in loose waves to better show off a trio of gold necklaces with the words 'happy' and 'cool' scrawled across her chest.

Directed by Nick Cassavetes, the comedy is due out on April 25 next year and tells the story of a woman who realises she is not her boyfriend's primary lover.

Prancing around: The model ran across the sand as the camera rolled

Cameron Diaz and Leslie Mann play the spurned duo who form an unlikely friendship as they team up to get revenge on the love rat who has been seeing a string of women as well as them.

Also making a splash is Nicki Minaj, who plays Cameron's opinionated assistant at her New York law firm.

It wouldn't be surprising if Upton - who is starring in only her third film - turned out to be one of these other women.

Covered up: Kate shared a snap of herself on Sunday in a figure hugging red dress

In one scene the Michigan native is seen cosying up to costar Nikolaj Coster-Waldau, who plays Diaz's cheating boyfriend in the film.

In real life Kate is said to be dating Dancing With The Stars professional Maksim Chmerkovskiy, 33, and the pair allegedly celebrated the model's birthday on Monday with a romantic dinner date in New York City.

'It's very new,' a source told US Weekly. 'They were set up through friends. They just started dating.'

Natural: Kate's natural love for the camera no doubt helped her land the role

The rumoured couple are said to have held hands under the table as they dined together at upmarket Italian restaurant Scalinatella on New York's Upper East Side.

'They were very canoodly,' the source said. 'It was a very intimate meal.'

Both of the stars' reps declined to comment, with a source close to Kate claiming the two have known each other a long time and are just good friends.

Larking around: Last week Kate was seen filming a party scene with costar Leslie Mann 

Party time: The actresses looked to be having a ball as they filmed the raucous