Youtube! Lindsay Lohan�s white bikini body for a 90-second film portrait directed by Richard Phillips

The thought of spending around 35 days cooped up in a house, forbidden from going out, is not an attractive prospect for most people.

But, in the first shot of Lindsay Lohan since she began her house arrest, the actress is seen looking happy and relaxed.

With a big smile on her face, Lohan greets a friend at the door showing no sign of getting fed up with her current situation.

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Trim and toned: Lohan showed off her bikini body in a white two-piece as she dived into the swimming pool

However, Lohan's positive attitude could be down to the fact she is undergoing her house arrest at a 3,100 square foot beachside townhouse in Miami.

She pays just under $7,100 a month in rent for the property, which features four bedrooms, three bathrooms and a rooftop deck which has views of the city.

Earlier this month, Lohan was ordered to serve time after pleading no contest to stealing a necklace from a Venice jeweller. She will also complete 240 hours of community service.

Bikini babe: Footage has emerged of Lohan in a 90-second film portrait directed by Richard Phillips

Meanwhile, new shots have emerged of Lohan showing off her trim bikini body in a film portrait.

In the 90-second film, shot by Taylor Steele and directed by Richard Phillips, the actress is seen donning a white bikini as she dives into a swimming pool and glides elegantly through the water.

The film portrait, which will be hosted at the Gagosian Gallery in Venice, Italy, was shot by Steele at a mansion in Malibu before Lindsay's house arrest began.

Enjoying yourself? Lindsay Lohan, who is under house arrest, looked happy and relaxed as she opened the door and greeted an unidentified friend

The footage is apparently meant to signify a new, more sophisticated, stage of Lindsay's life.

And the portrait, entitled Lindsay Lohan, also pays tribute to some of the world's most famous film stars including Brigitte Bardot and Liv Ullman.

Talking about working with Lindsay recently, Phillips said: 'Lindsay has an incredible emotional and physical presence on screen that holds an existential vulnerability, while harnessing the power of the transcendental - the moment in transition.