Did she nearly fall out of her dress? Jennifer Lopez wears not one but two VERY revealing gowns at the Oscars

Here come the girls: Jennifer was joined on stage by Cameron Diaz, who showed off her shape in a Gucci gown, to present the Oscar for Best Costume Design and Best Makeup

She may not have featured in a film this year but that didn’t stop Jennifer Lopez from making an enormous impact at the Oscars.

Jennifer stepped out in her trademark plunging gown in a Zuhair Murad dress which hugged her curvy figure to perfection.

But as the singer took to the stage alongside Cameron Diaz to present an award she appeared in danger of falling out of her shimmering gown.

 However, the star's stylist Mariel Haenn has defended the gown and has insisted that she didn't have a wardrobe malfunction.

'The dress fit perfectly to every inch,' she told People magazine. 'While the dress did give the illusion of sheer-ness, joke's on everyone who wishes they saw something!'

                                Cameron and Jennifer were seen preparing to present on stage

The 42-year-old singer looked great as she arrived at the awards ceremony showing off her Zuhair Murad dress;

The Oscar quick-change artists: The stars who went from red carpet to ready-to-party... but which outfits worked best?

She looked a dream in cream for the Oscars earlier in the evening - but Cameron Diaz squeezed deliciously into orange to party at the Vanity Fair bash following last night.

The actress's Gucci gown, which boasted a simple basque with a dramatic train, seemed to show her minimal curves to great effect, but the Bad Teacher star truly dazzled in a Victoria Beckham design at the Sunset Tower Hotel.

And she wasn't the only one who made a quick-change for the after-party, with Jennifer Lopez, Emma Stone and Irina Shayk among those who opted for a second gown to hob-nob late into the night.

The 39-year-old star modelled the very bright dress on the red-carpet and found herself sharing a joke with tennis player Venus Williams as they both posed for the cameras.

Cameron accessorised the slinky gown with a simple snakeskin clutch and a pair of oversized diamond chandelier earrings.

She kept her make-up simple as she had before and her blonde crop stayed in it's chic blown out style.

Inside Cameron mingled with her fellow A-list friends, including Kate Hudson who looked simply ravishing in a red fringed and beaded gown which featured a daring plunging back.

She had earlier arrived on the arm of her fiance Muse frontman Matt Bellamy.

The two ladies cuddled up for a snap as Cameron appeared to be enjoying a glass of wine and Kate champagne.

The 37-year-old star kept her usual serious face in tact as she arrived at the Vanity Fair Oscar party in West Hollywood with her footballer husband David.

As the British couple posed for photographers before heading inside, they appeared to be in very different moods with David laughing as he followed his wife.

The stone-coloured garment was completed with a black leather waist belt and not much else.

   Kate Bodworth and Michael Polish only had eyes for each other.

Jennifer Lopez introduces boyfriend Casper Smart to her celebrity friends at Vanity Fair party;

The stunning singer nuzzled into her younger beau as the couple posed for pictures.

In return he tightly wrapped his arm around Jennifer's waist, looking like the cat that got the cream.

And it's no wonder why.

 She may have arrived at the Oscars solo without her toyboy lover Casper Smart on her arm.

But the 42-year-old introduced her 24-year-old backup dancer boyfriend to her A-list friends as she took him as her date to the Vanity Fair after-party following the awards.

And the American Idol judge was certainly happy to see him.

The back-up dancer has enjoyed trips all around the world, including romantic getaways to Mexico, Morocco and most recently, Rio De Janerio for Carnival.

The fact that Jennifer has now introduced her younger boyfriend to the celebrity world is just another sign that things are getting more and more serious between the pair.

Meanwhile, Jennifer made an enormous impact at the Oscars this year.

   Say goodbye: Jennifer waved to fans before entering the star-studded bash

   WOOW SO WHAT DO WE HAVE HERE IS  ANGELINA JOLIE;

While the 36-year-old sashayed down the red carpet before the ceremony, stealing the spotlight from Best Actor nominee Brad Pitt with her leg-baring antics, social networking sites were quickly heating up with thousands of comments about 'Angie's right leg'.

 As she posed at different points along the red carpet the actress was captured continuously adjusting her Atelier Versace gown to ensure the cameras caught the leg from every angle.

The limb in question quickly became a trending topic on Twitter, with users debating over her enviably trim thigh, the slightly awkward and over-enthusiastic pose, and joking about the emphasis on her right leg in particular.

'Rainman would have no problem counting Angelia Jolie's leg,' one Twitter user joked, while another added: 'Fun fact: Angelina Jolie only shaved her right leg tonight.'

It wasn't long before a parody Twitter account called 'Angie's Right Leg' had been set up, declaring, 'I'm a leg, get a load of me!' and 'You have to admit I'm one hell of a leg!'

So far the account has attracted over 15,000 followers.

And if fans thought they had seen the last of the limb when the awards ceremony commenced, they were certainly wrong.

Perhaps already informed of the hoopla by her people, or simply enjoying the attention, the actress continued to pose up a storm when she took to the stage to present an award.

Walking onstage to present the gong for Best Adapted Screenplay, Angelina stopped at the microphone for several seconds with her hand on her hip and that leg on full display again.

With wolf whistles and cheering from the audience, Jolie giggled at the reaction before continuing with the presentation.

But not everybody was as taken with Angelina. The screenwriters for The Descendants, who won the award, were quick to mock her as they accepted the award.

While Alexander Payne, who also directed and produced the film, made his speech, fellow screenwriters Nat Faxon and Jim Rash mimicked Jolie's pose in an exaggerated fashion, drawing laughs from the audience.

 

Ryan Seacrest fails to see the funny side as Sacha Baron Cohen's fake dictator pours ashes of King Jong II all over his tuxed.......Scroll down for video.

Sacha Baron Cohen used the Oscars to pull off yet another audacious publicity coup to promote his latest movie, The Dictator.

Initially banned by the Academy from pulling such a stunt, bosses finally relented and allowed the British comedian to take to the carpet dressed as General Aladeen, who promptly tipped an urn  containing 'the ashes of Kim Jong II' over a furious Ryan Seacrest.

Cohen was quickly bundled away from the angry E! presenter in an unceremonious fashion. But what he lacked in dignity he made up for in humour.

Flanked by sexy military assistants carrying flowers, Sacha Baron Cohen's antics were a massive hit with everyone apart from his po-faced victim.

Cohen's latest creation received the biggest cheer of the night, and made himself the hottest topic of conversation in a matter of mere seconds.

Stars like Tina Fey waited in line to pose by the powder, and over at the Vanity Fair bash - Olivia Wilde mentioned in an interview that she hoped Cohen would bring the ashes to the party later.

It all started tamely for Seacrest when asked: 'Who are you wearing?'

Cohen replied gamely: 'I'm wearing John Galliano, but the socks are from K-Mart! As Saddam Hussein once said to me, socks are socks, don't waste money.'

Aside from Seacrest, everyone loved Cohen's antics but he was forced to ditch the powder immediately lest he sprinkle any other stars

 He said: 'It was my dream to come to the Oscars and be sprinkled over the red carpet and Halle Berry's chest again.'

Then he appeared to stumble and poured the contents all over Seacrest's Burberry suit.

The mixture, which turned out to be Bisquik pancake mix, coated Seacrest quite liberally, and he didn't see the funny side.

                                                            WATCH THE VIDEO.