Go on girl! Rosie Huntington-Whiteley is angelic in off-the-shoulder white dress before necking pints as she parties at Coachella

By JASON CHESTER and FAY STRANG

PUBLISHED: 16:35, 12 April 2014 | UPDATED: 23:56, 12 April 2014

She is not necessarily known for being a party girl.

But Rosie Huntington-Whiteley seems to be on a mission to have fun at Coachella Music And Arts Festival this year.

The 26-year-old was spotted looking the picture of innocence in a white frock before slipping into a sexy black number as she drank pints late into the night on Friday.

All white on the night! Rosie Huntington-Whiteley hosted the Soho Desert House with Bacardi and Spotify event at Coachella on Friday

Bottom's up: Rosie sups a pint as she partied in a black dress later that day

The model started her day hostsing FORWARD by Elyse Walker Event Hosted at Soho Desert House With Bacardi.

And of course she made sure she looked spot on for the occasion wearing a stunning white off-the-shoulder dress which showed off her bronzed complexion.

Later in the day she was seen gamely necking a pint of lager on as she mingled with pals at one of the festival's bars.

This one's on me: Rosie is accompanied by a male pal, who appears to order the drinks while she looks on to his right

Sporting a black off-the-shoulder top the Plymouth born star was in high spirits while chatting to a male pal, who appeared to order a round of beers for the group.

With a plastic cup brimming with booze held in her left hand, Rosie was a face in the crowd on the first day of Coachella.

But music festivals and the glamorous world of LA is a million miles away from her recent trip to the slums of Cambodia for a work trip with children's charity UNICEF.

High spirits: The Plymouth born model and actress was in a cheerful mood on day two of the annual music and arts festival

Let's talk: Rosie mingles with pals on Saturday

The star traveled to Phnom Penh to see first-hand the daily plight of children struggling to survive.

She documented the trip in a series of images she shared on Instagram, including photos with young children struggling against hunger, disease and poverty in the overcrowded slum villages.

'I’ve been so inspired by the children I’ve met on my first day in Cambodia, despite the conditions they live in,' the model wrote on Instagram.

Here you go: The British star is offered a plastic pint cup brimming with booze

Down the hatch: Health conscious Rosie Huntington-Whiteley enjoys a beer at the annual music and arts festival

Good times: The British star gets into the swing of things

In one photo, the blonde beauty appeared makeup free with her hair tied back in a small bun as she blew kisses to the camera with a group of four young girls. 'Such an incredible first day in Cambodia with @unicef_uk meeting gorgeous girls like these. #socceraid #unicef,' she posted to more than 1.4 million followers.

Elsewhere Rosie will return to the big-screen for the much anticipated Mad Max: Fury Road in 2015.

The actress takes the role of her precious in her first cinematic appearance since 2011 film Transformers: Dark Side Of The Moon.

Get the party started: Este from the group Haim performed on the first day of the festival

Chilling out: Party-goers lounged beside Becoming Human by Christian Ristow as the first day came to a close

Rock out: Davey Havok showed he still has it by jumping during AFI's performance

Crowd surfer: Rapper Meechy Darko of Flatbush Zombies jumped in the crowd during the first day

Meanwhile for those who are interested in the music, rap duo OutKast headline the Coachella Valley Music and Arts Festival, ending a half-decade hiatus for one of hip-hop's most popular and important acts.

OutKast joins Arcade Fire and Muse as headliners for the festival that plays over two weekends in Indio.

Other acts scheduled include Pharrell Williams, Beck, Queens of the Stone Age and Lorde. The reunited The Replacements will also appear.

Andre 'Andre 3000' Benjamin and Antwan 'Big Boi' Patton came out of Atlanta with a unique sound two decades ago and became one of rap's top-selling and most-lauded acts, winning the Grammy Award for album of the year for double album Speakerboxxx/The Love Below.

They haven't released an album as OutKast since 2006's Idlewild, a soundtrack.