Jennifer Lawrence’s co-stars have been left hungry for more after learning of her astonishing $10m deal to appear in the Hunger Games sequel film.

Liam Hemsworth, 22, and Josh Hutcherson, 19, have apparently been offered $2m each to star in the Catching Fire follow-up.

The pair are apparently driving a hard bargain, though, and demanding $5m each, threatening to walk if their requests are not met, according to RadarOnline.

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Big weight: Jennifer Lawrence’s reported $10m pay deal for the Hunger Games sequel has apparently left co-stars Liam Hemsworth and Josh Hutcherson hungry for more than their $2m deal offers

Jennifer, meanwhile, who was spotted arriving at a Santa Monica gym this morning in her workout gear, has managed to secure a $9.5m pay rise, having been paid just $500,000 for the first movie.

The Hollywood Reporter explained that the figure is a combination of ‘salary, bonuses and escalators’, but if the movie does well at the box office, 21-year-old Jennifer could earn significantly more than $10million.

But in the meantime, Australian actor Liam and U.S. star Josh are trying to thrash out a better deal with the studio, Lionsgate.

Fighting fit: The 21-year-old actress was spotted heading to a gym in Santa Monica today

A source told RadarOnline: ‘They’re not demanding as much as Jennifer, they’re aware she plays a bigger role in the films, but they want a little more than the $2 million they were each offered.

‘With the success of the first movie, they feel that $5 million is a more suitable fee and are haggling with the studio before dotting the i’s and crossing the t’s on their deals.

‘And they have even said they may not return for the sequel, which they hope will be a bargaining chip for a bigger pay packet.’

Smiles for the camera: Lawrence with Liam, left, and Josh at a screening of the movie back in March

The insider said the pair got wind of Jennifer’s huge pay rise, prompting them to up their price.

Jennifer, who plays Katniss Everdeen, has signed a contract to appear in all four Hunger Games movies – the sequel Catching Fire and the final book Mockingjay, which is set to be split into two films.

Production on Catching Fire is set to begin in September, with a tentative release date slated for November 2013.

The first movie was a box office smash, and took a staggering $673m in ticket sales worldwide.

Demanding a pay hike: Liam and Josh are said to be asking for more in the region of $5m and have even threatened to walk from the franchise if their requests aren’t addressed

Driving a hard bargain: Hutcherson seen in character in the hit movie