Nikki Reed forgets to suck her stomach in at NYLON party in honour of Young Hollywood

And breathe…out Twilight star Nikki Reed forgets to suck her stomach in on the red carpet at NYLON's Young Hollywood party

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UPDATED:

15:34 GMT, 10 May 2012

She is the queen of cool when it comes to Hollywood's young elite.

But even Nikki Reed made a fashion faux-pas last night on the red carpet at the NYLON party.

The 23-year-old beauty rocked up in a rose brown cutaway dress that exposed her midriff.

Suck in! Nikki Reed and Paul McDonald arrive at the NYLON party for the Young Hollywood issue

Suck in! Nikki Reed and Paul McDonald arrive at the NYLON party for the Young Hollywood issue

Ordinarily, this wouldn't matter for the 5ft 5in slender star.

However, as the Twilight actress lost
herself smiling down the lens of the camera alongside husband Paul McDonald, she
seemed to forget to suck her stomach in during their moment in the
spotlight.

The middle band around her waist appeared a fraction too tight, as her flesh rolled through the gap.

Strike a pose: Nikki was caught at a more flattering angle as she stood solo with her hands on hips

Strike a pose: Nikki was caught at a more flattering angle as she stood solo with her hands on hips

Yet when she posed solo, the brunette
beauty remembered to breathe in and created a more streamline silhouette
as she stood with her hands on her hips and showed off the large rock on
her ring finger.

The bash was held at the Roosevelt Hotel in Los Angeles, in honour of May's Young Hollywood issue.

And it seems American Idol star Paul
may have been a little overwhelmed, tweeting: 'I must say the LA party
scene is quite different from drinking PBR's (Pabst Blue Ribbon) with my
buds in Alabama.'

Rising stars: Emma Roberts and Francesca Fisher-Eastwood pose in a battle of the glitziest frock

Rising stars: Emma Roberts and Francesca Fisher-Eastwood pose in a battle of the glitziest frock

Poser: Emma was only too happy to break into a smile for the cameras with her celebrity friends Rumer Willis

Poser: Emma was only too happy to break into a smile for the cameras with celebrity friends Rumer Willis and Chord Overstreet

Poser: Emma was only too happy smiling for the cameras with friend Rumer Willis and Chord Overstreet

The 27-year-old met Nikki Reed on
another red carpet, at the premiere of Red Riding Hood in March 2011,
before getting engaged just three months later and swiftly saying 'I do'
last October.

Emma Roberts also put in an appearance, opting for a zebra stripe dress.

The Scream 4 beauty was only too happy to pose with her celebrity friends, swooping an arm over golden girl Francesca Fisher-Eastwood in a competition of who had the glitziest cocktail gown.

Too cool for school :Rumer shunned heels and cocktail dresses for boots and a blazer

Too cool for school :Rumer shunned heels and cocktail dresses for boots and a blazer

One Tree Hill beauty Kelsey Chow was also in attendance, alongside The Young And The Restless star Lyndsy Fonseca and English actress Ashley Madekwe, from ABC drama Revenge.

One Tree Hill beauty Kelsey Chow was also in attendance, alongside The Young And The Restless star Lyndsy Fonseca and English actress Ashley Madekwe, from ABC drama Revenge.

One Tree Hill beauty Kelsey Chow was also in attendance, alongside The Young And The Restless star Lyndsy Fonseca and English actress Ashley Madekwe, from ABC drama Revenge.

Cream of the crop: One Tree Hill actress Kelsey Chow was also in attendance, alongside The Young And The Restless star Lyndsy Fonseca and English actress Ashley Madekwe, from ABC drama Revenge

She was later seen with Rumer Willis,
although Demi Moore and Bruce Willis' ultra-cool daughter failed to
flash even a hint of a grin, and of course, trusty on/off boyfriend
Chord Overstreet.

Typically the Sorority Row star, 23, shunned heels and cocktail dresses for boots and a blazer.

One
Tree Hill beauty Kelsey Chow was also in attendance, alongside The
Young And The Restless star Lyndsy Fonseca and English actress Ashley
Madekwe, from ABC drama Revenge.

Keeping trim: Nikki was seen working out with Paul before their big night out

Keeping trim: Nikki was seen working out with Paul before their big night out

Keeping trim: Nikki was seen working out with Paul before their big night out