Mum direction! Pregnant Cheryl, 33, unveils a huge baby bump as she and Liam Payne, 23, head out to a Christmas carol concert (as she plans her very own nativity scene) 

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She's rumoured to be expecting her first child with boyfriend Liam Payne.

And on Tuesday Cheryl only served to increase speculation surrounding her 'pregnant' state, as she displayed a prominent bump at a nativity-themed Carol concert.

Arriving at the Quintessentially Foundation fair of St James Christmas Carol Concert, in London with her boyfriend, the star, 33, displayed a fuller figure beneath her knitted dress. 

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Keeping mum? Cheryl only served to increase speculation surrounding her 'pregnant' state, as she displayed a prominent bump at a Carol concert, on Tuesday

Fantastic: Once inside the venue, the pair could barely keep their eyes off one another as they looked very much in love

Braving the winter weather, the former Girls Aloud star and her boyfriend, 23, stepped out in the capital to enjoy a festive treat.

Opting for a seasonal yet stylish ensemble, Cheryl slipped into a tight-fitting olive mini dress.

The knee-length olive number featured a black striped across the décolletage, though the dress couldn't quite hide Cheryl's tummy.

Wearing her billowing black overcoat open, the star ensured that she'd be well protected from any chills. 

A bigger bump: Arriving at the fair of St James Christmas Carol Concert, in London with her boyfriend, the star, 33, displayed a fuller figure beneath her knitted dress

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Cheryl may have not yet officially announced her pregnancy, but it seemed clear from the pictures of her arriving at the fair of St James Christmas Carol Concert with beau Liam Payne that she was indeed expecting.

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Winter warmer: Opting for a seasonal yet stylish ensemble, Cheryl slipped into a tight-fitting olive mini dress

The grand reveal? The knee-length olive number featured a black striped across the décolletage, though the dress couldn't quite hide Cheryl's tummy

She rounded of her wardrobe with a pair of thigh-high leather boots, a billowing checked scarf and a metal studded handbag.

As the couple arrived at the carols, Liam couldn't help but wrap a protective arm around his girlfriend.

Dressed in a black greatcoat, jumper, jeans and boots, the singer cut a handsome figure as he escorted Cheryl into the venue. 

A spokesperson for Cheryl told MailOnline that she will not be commenting on the matter. 

A helping hand: Cheryl was aided onto the stage in her high-heeled thigh-high boots 

Firm friends: Once inside, Cheryl posed up a storm with pop star Olly who performed at the carol concert

Taking to the mic: She had some words to say as the evening raised over £200,000 with proceeds going to Cheryl’s Trust and The Prince’s Trust

Looking incredible: She appeared happier than ever as she posed for pics with a big smile on her face 

Taking it higher: Cheryl turned on the lights at the event with the help of a pal and one large switch

Ready, set, go! The brunette beauty looked excitable as she prepared for the big moment

Festive fun! She seemed to be fully immersing herself in the Christmassy spirit 

When contacted by MailOnline a representative of the Fight For This Love singer declined to comment.

Speculation that the couple, who first met on the X Factor in 2008, were expecting a child began to circulate in September.

The loved-up couple's outing came just hours after Cheryl was urged to confirm her 'pregnant' state by TV favourite Lorraine Kelly.

Speaking to Dan Wootton on ITV's Lorraine, the host asked: 'Have they still not confirmed whether or not she’s pregnant? 

Looking cosy: The good-looking duo beamed as they held hands in a rare show of public affection

 Nothing to hide here: Braving the winter weather, the former Girls Aloud star and her boyfriend, 23, stepped out in the capital to enjoy a festive treat

Keep close: Wearing her billowing black overcoat open, the star ensured that she'd be well protected from any chills

Stylish as ever: She rounded of her wardrobe with a pair of thigh-high leather boots, a billowing checked scarf and a metal studded handbag 

She continued: 'Why don’t they because it’s not exactly something you can hide. It will come out.

'I can understand it until a certain time, but once you’re over three and a half, four months, then you think you would.

'It’s great, it’s really good news.' 

Earlier on this month choreographer Brian Friedman appeared to give the game away when it came to the 'pregnancy', telling New! magazine: 

Protective: As the couple arrived at the carols, Liam couldn't help but wrap a protective arm around his girlfriend 

Happy couple: Liam and Cheryl looked more loved-up than ever as they arrived at the event, smiling and laughing as they made their way inside

Dapper dude: Dressed in a black greatcoat, jumper, jeans and boots, the singer cut a handsome figure as he escorted Cheryl into the venue

Smile! Cheryl could barely keep a smile off her face as Liam helped her out of the car they arrived in

Tender touch: Placing a tender hand on her back, the 1D star assured his girlfriend he was by her side as they entered the church

Rumours of a pregnancy first started to swirl in September when Cheryl's mother, Joan Callaghan was pictured buying baby goods

Flashing those pearly whites: The couple appeared to be in excellent spirits on the night 

'Everyone wants to be in love, everyone wants to be happy.

'And now they're having a baby together, so they definitely found something great. It's funny to think back how long ago it was that they first met.'

Rumours of a pregnancy first started to swirl in September when Cheryl's mother, Joan Callaghan was pictured buying baby goods.

The star divorced her first husband Ashley Cole after four years of marriage in 2010 after he had an affair, and just last month she and her second husband Jean-Bernard Fernandez-Versini were granted decree nisi in just 14 seconds.

Her good pal: Olly Murs strutted his stuff on the stage to a host of stars

Working it: He was wearing a rather snazzy pair of tight trousers as he belted out his hits 

Blossoming: Cheryl's changing shape was impossible to miss as she posed with her man

Putting her best foot forward: She showed off her natural beauty as she modelled her latest wardrobe choice 

Keeping mum: It appears as though Cheryl is not going to comment on the pregnancy talk

Happy at last: Cheryl and Liam went public with their romance in February after being spotted together in a supermarket in Guildford, Surrey

Cheryl and Liam went public with their romance in February after being spotted together in a supermarket in Guildford, Surrey.

The couple's romance came five months after she and Jean-Bernard officially separated. 

Liam and Cheryl's outing comes just 24-hours after the One Direction heartthrob cut a solo figure on Monday night as he attended the after-party for the I Am Bolt world premiere in London's Tape nightclub. 

With his sweetheart working more than 200 miles away in her native Newcastle, the One Direction star understandably seemed glum as they spent the evening apart.

Flying solo: The outing comes just 24-hours after Liam , 23, cut a solo figure on Monday night as he attended the after-party for the I Am Bolt world premiere in London's Tape nightclub

Lonely hearts club: With Cheryl working more than 200 miles away in her native Newcastle, the One Direction star understandably seemed glum as they spent the evening apart

Whilst he arrived at the bash with a smile on his face, the evening seemed to take its toll on Liam as he headed home with a sombre expression.

Keeping his head down, the handsome star was bundled into his waiting car after obliging fans who were after selfies. 

His outing came as Cheryl tweeted that she has gone home to Newcastle to work on her charity, Cheryl's Trust.

She wrote:' Such an exciting day in Newcastle making decisions about my charity  #cherylstrust.'

Happy news: Liam has been inseparable from girlfriend Cheryl, 33, amid claims they are expecting their first child together - although this remains unconfirmed

Doing her thing: Earlier in the day, Cheryl tweeted that she has gone home to Newcastle to work on her charity, Cheryl's Trust

But whilst he may not have had the singer by his side, Liam was still in good company at the world premiere.

He was suited and booted for the red carpet event, which promoted Usain Bolt's new documentary. 

It follows the Jamaican athlete in the 18 months leading up to his epic - and historic - triple win in Rio this year.

Ride for one: Liam seemed tense as he headed into his waiting car after a night out alone 

Started so well: Whilst he arrived at the bash with a smile on his face, the evening seemed to take its toll on Liam as he headed home with a sombre expression

Off he goes: Keeping his head down, the handsome star was bundled into his waiting car after obliging fans who were after selfies

Snap happy: The selfless star managed to plaster a smile on his face for a selfie with a fan 

Liam was at London's Odeon cinema in Leicester Square to celebrate his friend's company, taking to Twitter ahead of his night out to write why the film is so important to him.

He wrote: 'Looking forward to the premiere in Leicester Square tonight! @usainbolt.

'Always great work from my friends @fulwell73productions & @doyenglobal #IAMBOLT.'

Liam wore head-to-toe black, opting for a smart suit with matching tie and black shirt to support the movie which was released on the same day. 

'Daddy-to-be': Liam looked dapper as he suited up to walk the red carpet at the I Am Bolt premiere at London's Odeon cinema in Leicester Square on Monday

Support: The 23-year-old looked suited and booted for the red carpet event, which follows Jamaican athlete Usain Bolt in the 18 months leading up to his epic triple win in Rio

So good: No doubt Liam's presence delighted all of his hands as he's been keeping a fairly low profile of late

Showing off the rose tattoos on his hand, which mirrors the one on his girlfriend's derriere, he had a big smile on his face as he walked down the red carpet. 

But he wasn't the only star in attendance on the night.

Bolt, who has nine gold medals from three Olympic games under his belt, stole the limelight at the premiere .

Coincidence? Showing off the rose tattoos on his hand, with mirror the one's on his girlfriend's derriere, he had a big smile on his face as he walked down the red carpet

Snap happy: He posed with thrilled fans and took selfies on his phone with him

The fastest man on the planet: Usain Bolt looked dapper in a navy suit as he grinned cheekily at the event, where his proud parents also attended 

The fastest man on the planet looked dapper in a navy suit as he grinned cheekily amid a spectacular sea of scantily-clad dancers at the event, where he was joined by his proud parents Jennifer and Wellesley Bolt. 

Usain dressed to impress for the occasion, looking worlds away from his skintight running gear in the sharp navy two-piece, which he teamed with a matching tie. 

Also present was sportswoman Louise Hazel, singer Tallia Storm and tennis icon Boris Becker.  

Wanting some company? The star appeared rather nervous as he approached the red carpet with a minder in tow