'Phew I'm so pleased that all is well!': Fans congratulate Luisa Zissman as she reveals she welcomed her third child in secret a month ago... after leaving fans baffled by flat stomach in glamorous gown

Luisa Zissman gave birth to her third child in secret three and a half weeks ago, sharing the good news on Instagram on Thursday morning.

The former Apprentice star revealed she had welcomed a baby girl named Clementine with her husband Andrew Collins, confessing that questions from fans had prompted her to finally make the news public.

The 30-year-old entrepreneur had left fans baffled by posting pictures of herself wearing a figure-hugging blue gown at the Elton John Aids Foundation bash the night before, with her baby bump noticeably absent.

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Baby joy: Luisa Zissman welcomed her third child in secret three and a half weeks ago, but decided to announce the news this Thursday after sparking concern over her 'missing bump'

Baby joy: Luisa Zissman welcomed her third child in secret three and a half weeks ago, but decided to announce the news this Thursday after sparking concern over her 'missing bump'

Dress to impress like Luisa in Pia Michi

Stepping out to the Elton John Aids Foundation bash, Luisa Zissman stayed true to blue in a stunning cobalt dress by Pia Michi.

The star looked amazing in this strapless creation, featuring a flattering fishtail cut and an architectural pointed neckline.

Styling her hair in loose waves, Luisa also kept her jewellery to a minimum to allow the stylish dress to steal focus. The fishtail skirt and pointed detail offered up just enough pizzazz to take this dress from simple to stand-out.

Pia Michi is a popular brand with stars, and we've spotted a whole load of celebs wearing the eveningwear specialist label recently such as Amelia Lily, Casey Batchelor and Michelle Heaton.

Click right to explore the current collection, or head to the edit below to get the look with the picks from Sistaglam, Lipsy and more.

* PRICES MAY NOT BE AS ADVERTISED

Addressing the speculation, Luisa wrote: 'So many people have messaged me asking if the baby is ok because I chose not to share on my social media, and now my bump has gone!

'She is absolutely perfect & we are totally in love with her. I had her 3.5 weeks ago on Sunday 5th November at 6.56am.

'She weighed 7lbs 14oz and we named her Clementine Saskia Collins. #newprincess #mysecretbubble.' 

The announcement also included a picture of baby Clementine's hospital crib, lined with a duck print blanket and a toy cat.

Big news: The Apprentice star announced, 'she is absolutely perfect & we are totally in love with her. I had her 3.5 weeks ago on Sunday 5th November at 6.56am'

Big news: The Apprentice star announced, 'she is absolutely perfect & we are totally in love with her. I had her 3.5 weeks ago on Sunday 5th November at 6.56am'

Luisa is already mother to Dixie from a previous relationship and Indigo Esme with husband Andrew.

The TV star's fans were quick to congratulate her, and most couldn't believe that she had managed to keep the news secret for so long. 

One posted, '3 weeks ago what! Congrats', while another shared, 'Phew I’m so pleased and all is well. Congratulations to you all xx'.

A third commented: 'Saw you in that dress last night and thought WOW as didn't think you even looked pregnant! Well done for keeping your lovely news to yourselves and having time to enjoy her xxx'.

Others queried why she was being so secretive, when she has lived her life in the public eye.

Surprise: The TV star's fans were quick to congratulate her, and most couldn't believe that she had managed to keep the news secret for so long

Surprise: The TV star's fans were quick to congratulate her, and most couldn't believe that she had managed to keep the news secret for so long

One of her followers asked, 'Can I ask why you decided not to share that she was born but told us about the pregnancy etc? Not judging just curious ! Congrats tho x'.

Luisa explained: 'I announced pregnancy because everyone said how fat I had gotten, it really upset me knowing I was 5 months pregnant so chose to announce pregnancy.

'Have only announced birth now because obvs bump is gone and ppl have been messaging thinking something bad happened to the baby. Xx'

Revealing that has been focusing on her newborn, Luisa replied to another post, saying: 'I barely told anyone babe. It's been total bliss snuggled up in the warm at home getting to know my newest little lady.'

In June, Luisa revealed to her 433,000 followers that she is set to add to her brood, alongside a picture of two T-shirts and two baby gros - one adorned with the word 'Newbie'.

Hitting back: Justifying why she announced the pregnancy and not the birth, Luisa said, 'I announced pregnancy because everyone said how fat I had gotten, it really upset me knowing I was 5 months pregnant so chose to announce pregnancy'

Hitting back: Justifying why she announced the pregnancy and not the birth, Luisa said, 'I announced pregnancy because everyone said how fat I had gotten, it really upset me knowing I was 5 months pregnant so chose to announce pregnancy'

Her sweet announcement came in the form of a picture of four garments including a T-shirt with Queen Luisa adorned on the back with a 00, atop a T-shirt with Princess Dixie 01, Princess Indigo 02 and Princess 03 Newbie.

While she added the simple caption on the shot reading: 'Girl gang', she took to the comment section to pen: 'always wanted girls never boys!' 

The businesswoman also raises seven-year-old Dixie, who she shares with her ex husband Oliver Zissman. Luisa started dating her husband Andrew Collins in late 2013, a few months after she found was propelled into stardom on The Apprentice.

The Irish business tycoon proposed to her with a £1.5million ring in Paris in October 2014 before they tied the knot in France in July 2015. The Milton Keynes native gave birth to their daughter Indigo in August 2016.

Yay! Back in June, Luisa has announced she is expecting her third child, a baby girl

Yay! Back in June, Luisa has announced she is expecting her third child, a baby girl

 Happy days! The 30-year-old entrepreneur took to Instagram on Thursday to reveal to her 433,000 followers that she is set to add to her brood, alongside a picture of two T-shirts and two baby gros - one adorned with the word 'Newbie'

Describing her dream to add to her brood, she told OK! magazine: ‘My dream is to have four daughters who are all really into horse riding, like me. I’m not sure I’d know what to do with a boy!’ 

While Luisa no longer shares images of her tots on social media, she did document her last pregnancy and post baby journey.

Two weeks after her youngest's arrival she posted a snap snowing the difference in her frame alongside the caption: '2 weeks ago vs this morning. Surprised at how quickly my stomach has gone down. I gained 2st with this pregnancy & have 7lbs to lose now. With Dixie I gained 4st! 

'having been very fit before I got pregnant was a massive bonus in my recovery I think. Skin is still loose & can't wait to tone up but on the whole pretty pleased with how belly is looking. 

Happy days: Describing her dream to add to her brood, she told OK! magazine: ‘My dream is to have four daughters who are all really into horse riding, like me. I’m not sure I’d know what to do with a boy!' (Pictured with Andrew) 

Happy days: Describing her dream to add to her brood, she told OK! magazine: ‘My dream is to have four daughters who are all really into horse riding, like me. I’m not sure I’d know what to do with a boy!' (Pictured with Andrew) 

Happy days: While Luisa no longer shares images of her tots on social media, she did document her last pregnancy and her post baby journey

Happy days: While Luisa no longer shares images of her tots on social media, she did document her last pregnancy and her post baby journey

Snapping back! Seven weeks after welcoming Indigo, she shared a snap of her incredible post-baby body while adding a caption on the shot reading: '2 weeks postpartum vs today 7 weeks postpartum

Snapping back! Seven weeks after welcoming Indigo, she shared a snap of her incredible post-baby body while adding a caption on the shot reading: '2 weeks postpartum vs today 7 weeks postpartum

'Have no core strength which I realised after trying to ride my horse last week. I did NO exercise throughout my pregnancy due to my hips & pelvis being in agony, and I ate well but didn't deny myself anything. As soon as doc signs me off I'll be following programme to get fit, doing Pilates & yoga'.

Seven weeks after welcoming Indigo, she shared a snap of her incredible post-baby body while adding a caption on the shot reading: '2 weeks postpartum vs today 7 weeks postpartum. 

'Stomach gone down & very slowly getting some kind of tone back, long road ahead! For those interested I've been eating well but not denying myself anything & doing Pilates, or toning classes at least once a day, sometimes twice and horse riding too. 

'I STILL lack core strength which I discovered when schooling my horse today! But I'll get there! Loving my new leggings from H&M!'

Adding away: Describing her dream to add to her brood, she told OK! magazine: ‘My dream is to have four daughters who are all really into horse riding, like me. I’m not sure I’d know what to do with a boy!'

Adding away: Describing her dream to add to her brood, she told OK! magazine: ‘My dream is to have four daughters who are all really into horse riding, like me. I’m not sure I’d know what to do with a boy!'

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