Not what we were expecting: Cameron Diaz fails to heat up the red carpet in dowdy blouse and trousers... but still manages to work up an unsightly sweat

With her baggy black trousers and white shirt, Cameron Diaz looked more dressed for a day at the office than a glitzy film screening.
The 39-year-old star still looked her typical stunning self for the screening of new movie What to Expecting When You're Expecting in New York earlier this evening, but appeared to be suffering a little from the lights and heat.
A visible sweat patch appeared on the sleeves of the star's sheer white blouse as she posed for photographs on the red carpet.
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Low key: Cameron Diaz looked dressed more for a day at the office rather than a glittering movie screening at tonight's What To Expect When You're Expecting event in New York

 

Working up a sweat: The actress was clearly feeling a little hot under the lights

However, Cameron, who teamed her outfit with minimal make-up, elegantly styled blonde hair and nude heels, seemed to be having a good time despite the heat as she poised with the cast and chatted to Chris Rock.
It was a far cry from her appearance at last night's Met Ball gala, where she looked every inch the Hollywood glamour girl with a floor length gold glittering gown and chic-up do.
But without Cameron's co-star Jennifer Lopez on the carpet to provide the glitz at tonight's event, it was left to model-turned actress Brooklyn Decker to be the glamour girl.
The 25-year-old Sports Illustrated model wore a simple white strapless dress with pared down gold jewellery.

 

Pared down: Despite her toned down make-up and outfit, Cameron still looked stunning at the screening

 

 

Candid camera: Brooklyn shared a joke with Elizabeth, while Cameron posed with Chris Rock

She teamed her ensemble with casual tousled beach curls and minimal make-up.
She plays an expectant mother in the movie alongside both Cameron and J-Lo, while Elizabeth Banks stars as an opinionated author.
The Hunger Games actress provided a little more old-school Hollywood glamour with a colourful optical illusion-style low cut dress with black fringed detail and sheer side panels.

 

The white stuff: Brooklyn Decker plumped for a strapless white gown for the special New York screening

 

 

Tousled chic: Brooklyn teamed her outfit with pared down gold jewellery, minimal make-up and casual beach-hair for the event

Gossip Girl star Chace Crawford, was also on the carpet in a dapper grey suit. He stars in the film as an old flame of Rosie, played by Anna Kendrick.
Anna joined J-Lo, Cameron, Elizabeth and Brooklyn on the cover of Redbook magazine where they discussed their experiences an opinions on motherhood.
Cameron admitted she initially thought she would be a mother at the age of 21, but instead landed a plum role opposite Jim Carrey in hit film The Mask.

 

 

Film magic: Elizabeth Banks steps out in a colourful fringed dress with side panels, while Chace Crawford is dapper in grey suit and skinny tie

 

 

Trail blazer: Sports Illustrated model Chrissy Teign looked stunning in a white jacket and sparkling skirt, while one of the film's stars Chace Crawford wore a dapper grey suit

 

Stars of the show: Chace, Brooklyn, director Kirk Jones and Elizabeth posed for a cast shot before the screening

'I thought I was going to be married and have two children,' Cameron told the magazine. 'I think I felt I had to model my life after my mother's.'

She added: 'But then my career was starting to take off and there were still so many things I wanted to do.

'So that dream [of motherhood] for me was shattered early on. After that I never put another time line on anything in my life.'

 

New arrivals: Elizabeth Banks and Cameron Diaz both co-star in ensemble comedy film What To Expect When You're Expecting