Charlotte Dawson has revealed that she's back in her size 10 jeans after having her third child.

The TV personality, 33, is mum to Noah, five, Jude, three and 12-month-old Gigi with fiancé Matt Sarsfield.

Taking to Instagram on Thursday, Charlotte shared a before and after clip displaying her impressive weight loss.

Standing in her bra and underwear, the reality star tried to pull up a pair of jeans, as she said to the camera: 'Right, so these are my favourite jeans. Obviously I can't even get them past my thunder thighs.

'Tina the talking tummy. Tina, the bloody talking tummy and Theresa thunder thighs, I can't get them up.

'But I want to. I want to wear, like a nice top and jeans, do you know what I mean. So I'm like, what do I wear?

'You know when people are like, I'm just going to put some jeans on and a nice top, I'm like, yeah, I'd love to.

'I'd love to as well, but I can't put them on. Help me. I'm going to get them up; it's going to happen.'

It then jumped to a clip of Charlotte looking incredible after her weight loss, donning the pair of jeans.   

She proudly said: 'Well guys, today's a good day. I did it. I got in my favourite jeans, and I am absolutely buzzing. 

'I mean, obviously I still have a bit of the chunky but funky bit here, but I'll tell you what, I slipped right in.

'And not even struggled, like I actually got in.'

Pointing to her stomach, she continued: 'I've always had this bit here. But I'm just so proud of myself because I can finally wear jeans and a nice top.

'Do you know what I mean?'

She continued: 'But oh my god, Theresa thunder thighs, you've bloody calmed down, haven't you? Tina the talking tummy, she's calmed down. 

'I'm just buzzing, I've done it the right way,  the Confidence Curve way, and I'm feeling confident, fabulous, healthy, and just so bloody proud of myself.

'Oh my god, today is a fabulous day. This is going to go down in history, and it's my birthday.

'It's my birthday in literally two days.

'So yeah, happy birthday to me; I got into my favourite jeans. They're a size 10.' 

Alongside the post, Charlotte wrote in a lengthy caption: 'THE FAVE JEANS ARE BACK ON BABYYYYYY double post tonight because today is a bloody beltin day!!!

'Honestly… looking at where I started and where I am now makes me SO proud of myself. Not because of a number on the scales, but because I’ve done this the Confidence Curve way no crazy restrictions, no quick fixes, no starving myself… just making healthier choices, moving my body, changing my mindset and actually creating a lifestyle I can stick to. 

'And getting back into my favourite size 10 jeans?! HELLOOOOOOO.

'This is exactly WHY I created Confidence Curve. I wanted something affordable, realistic and empowering that makes you feel GOOD in yourself, whatever your shape, size or starting point.

'To everyone who has already signed up… THANK YOU I genuinely cannot wait to go on this journey with you all and watch you find that confidence within yourselves too.

'Lifestyle change, not a quick fix. AND so affordable.

'Come on girls… let’s feel GOOD, look GOOD and become the happiest, most confident versions of ourselves.'

It comes after Charlotte addressed the 'ups and downs' of her relationship with her fiancé Matt after they were caught engaging in a tense chat last month.

The couple were seen looking strained at the National Television Awards, where Matt was seen walking away from Charlotte after the heated moment.

Just days later, Charlotte paid tribute to her husband-to-be and acknowledged that things between them 'haven't always been perfect'.

Despite their apparent disagreement at the NTAs, Charlotte shared a selection of photos from their evening at the awards ceremony.

Alongside the snaps, she wrote: 'Happy birthday to my sexeh man, my baby daddy, my partner in crime. 10 birthdays together… HOW?! We've had the wildest ride, with more ups and downs than I could ever count, but through it all, we've built our beautiful little family and shared some of the most incredible memories together.

'Life isn't always perfect, but most importantly… we have each other. And after everything, that's what matters.

'Here's to another year of you, more memories, more laughs & more chaos. Happy birthday my love. Here's to forever… love you.'

In exclusive footage obtained by the Daily Mail from the night, Matt was seen walking away from Charlotte after a heated moment in London's O2 Arena.

Moments later Charlotte appeared frustrated as she followed Matt, 34, to get his attention.

Their intense conversation came just hours after the couple put on a united front as they posed for Instagram snaps in their red carpet looks.

Charlotte dazzled in a white corset gown while Matt wore a velour suit jacket and bow tie.

The couple, who have been together for eight years, were hit by split rumours back in December after they 'had a blazing row'.

Charlotte at the time shut down the speculation, just months after she discovered he was 'sexting' another woman.

The Daily Mail has approached Charlotte's representatives for comment.