'I'm 100 per cent NOT': Kate Winslet denies reports she's pregnant as she gets back to work on new film Collateral Beauty after sparking rumors at the Oscars

The rumour mill went into overdrive at the Oscars when Cate Blanchett and Brie Larson were pictured excitedly touching her stomach, fuelling speculation she might be pregnant.

But Kate Winslet was back in business mode on Tuesday as she returned to the set of Collateral Beauty - and categorically denied that she is expecting a fourth child. 

The 40-year-old actress was looking fresh-faced as she made her way to the film's New York City set and spoke out about the rumours.

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Laid-back look: Kate Winslet was back at work on Tuesday following the Oscars and was keen to put rumours that she was pregnant to rest

Laid-back look: Kate Winslet was back at work on Tuesday following the Oscars and was keen to put rumours that she was pregnant to rest

Speaking to a camerman who quizzed her over the claims, she replied in a matter-of-fact manner: 'I am categorically NOT( pregnant).'

The mum-of-three then got into a waiting car and kept her look for work simple, rocking skinny jeans and a black blazer, set off with a matching scarf.

The Titanic favourite completed the ensemble with a pair of suede ankle boots and a simple shoulder bag.

The mother-of-three - who has 15-year-old daughter Mia with ex-husband Jim Threapleton, 12-year-old son Joe with second ex-spouse Sam Mendes, and two-year-old son Bear with her current husband Ned Rocknroll - was sporting minimal make-up and bright pink lipstick.

Fresh-faced: Kate opted for minimal make-up and bright pink lipstick for her first day back at work
Fresh-faced: Kate opted for minimal make-up and bright pink lipstick for her first day back at work

Fresh-faced: Kate opted for minimal make-up and bright pink lipstick for her first day back at work

Ready for action: The star carried a flask of coffee and her script under one arm as she prepared to resume work on the  drama

Ready for action: The star carried a flask of coffee and her script under one arm as she prepared to resume work on the drama

Keep it casual in Kate's Isabel Marant boots

Awards season is over, and it's back to work for Kate Winslet. No more glamorous gowns and sky high heels!

On the red carpet at the Oscars, she stood out in a high shine strapless gown by Ralph Lauren. But this time she showed us how to do dressed down days like an A-lister when she arrived on set in a tassel trim blazer, skinny jeans and her favorite Isabel Marant boots.

We love the concealed wedge heel and western details down the front of this iconic design. They're the same style we've spotted on (deep breath now!) Emma Watson, Jennifer Lawrence, Jennifer Garner, Courteney Cox and Cameron Diaz, so you'll be keeping good company if you click (right) to buy them at Barney's.

Ankle boots are an essential part of every woman's winter wardrobe, but if Marant is more than you wanted to spend, browse the boots below. Asos' fringed version is a great way to dip a toe in the trend, but will set you back a fraction of the price of the real deal!

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She seemed in great spirits as she got back to work on the star-studded drama.

Collateral Beauty also features Dame Helen Mirren, Will Smith, Edward Norton and Keira Knightley.

The dramatic comedy tells the story of an advertising executive, played by Smith, who falls into a deep depression following a personal tragedy.

Not expecting: The busy and talented mom-of-three categorically denied she is pregnant as she headed to the film set

Not expecting: The busy and talented mom-of-three categorically denied she is pregnant as she headed to the film set

A girl and two boys: The actress has three children from her three marriages

A girl and two boys: The actress has three children from her three marriages

All-star cast: The David Frankel-directed film also features Dame Helen Mirren, Will Smith, Edward Norton and Keira Knightley
All-star cast: The David Frankel-directed film also features Dame Helen Mirren, Will Smith, Edward Norton and Keira Knightley

All-star cast: The David Frankel-directed film also features Dame Helen Mirren, Will Smith, Edward Norton and Keira Knightley

Helen plays an actress hired by his colleagues as part of a plan to break him out of his dark spell.

Collateral Beauty is directed by David Frankel, who made Marley & Me and The Devil Wears Prada from a script by Alan Loeb, whose credits include 21, Wall Street: Money Never Sleeps and Rock Of Ages. 

The rumours that she was expecting followed the publication of photographs of her fellow actresses Cate and Brie feeling her stomach.

After social media users speculated that she could be expecting her fourth child, a slightly more simple explanation for the exchange has since emerged.

A source close to the actress said that 'the star is NOT pregnant but was actually letting her friends feel the beautiful fabric of the dress.'  

She is NOT pregnant: A source close to Kate Winslet has confirmed she is not with child, after a set of pictures at the Oscars implied she had some happy news  

She is NOT pregnant: A source close to Kate Winslet has confirmed she is not with child, after a set of pictures at the Oscars implied she had some happy news  

What happened? Kate seems to share some news with Brie Larson and Cate Blanchett , leaving them excited, but they were simply feeling the fabric of her dress 

What happened? Kate seems to share some news with Brie Larson and Cate Blanchett , leaving them excited, but they were simply feeling the fabric of her dress 

So happy! Cate reaches forward and places her hand on Kate's stomach, leading some to believe the actress had some baby news

So happy! Cate reaches forward and places her hand on Kate's stomach, leading some to believe the actress had some baby news

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