Stacey Solomon said firstborn Zachary is 'the best thing that ever happened to me' on Instagram on Wednesday after sending him off to his Year 11 prom.
The presenter, 34, who gave birth to Zachary when she was 17, wrote a sweet post to Zachary, 16, alongside a family photo gallery.
Mother-of-five Stacey - who has said she and Zachary grew up together, wore a beautiful pale blue summer dress while Zachary looked fashionable in a blue three-piece suit and trainers.
The Loose Women panellist captioned the sweet carousel: 'My baby just went to prom. I don’t think I’ve ever felt this way.
Stacey Solomon, 34, said firstborn Zachary, 16, is 'the best thing that ever happened to me' on Instagram on Wednesday after sending him off to his Year 11 prom
The presenter wrote a sweet tribute to Zachary alongside photos of themselves, stepfather Joe Swash (pictured), and Zachary's friends and their parents
Stacey - who gave birth to her son when she was aged 17, wore a beautiful pale blue summer dress while Zachary looked fashionable in a blue three-piece suit and trainers
'My Zachary, has finished his GCSEs, left school, started his first job and is off to his prom.
'Zach you are the best thing that ever happened to me. We’ve grown up together. I just can not believe how that time has flown by.
'Go and have the best night ever. You deserve it my darling. I’ll be on stand by for the after party pick up.
'To the moon and back Zachary.'
Stacey shared the post to her Story, writing: 'I'm so proud of you Zach. I love you so much. I can't believe this is it. School done. Now time to find out who you are. To the moon and back...'
Joe, Stacey's father David Solomon, and Carol Voderman all left sweet comments under the post.
Former EastEnders star Joe wrote: 'Where has the time gone! ❤️'
Photographer David wrote: 'Incredible how time flys and how bloody handsome he is (sic)'.
Carol, 63, wrote: ' Well that’s made me cry a little tear. You’ve been through so much and now you are mighty…. And loved. Special mum ❤️'
Fans added: 'He was a baby on x factor'; 'You know what I love most about these. … there’s a slight but defo rainbow / orb from the lense & reflection from the pool over all of you in each photo! Special (sic)';
Stacey shared the sweet life update with her 6M followers and told them she Zachary grew up together
Stacey captioned the sweet carousel: 'My baby just went to prom. I don’t think I’ve ever felt this way. My Zachary, has finished his GCSEs, left school, started his first job and is off to his prom'
She continued: 'Zach you are the best thing that ever happened to me. We’ve grown up together. I just can not believe how that time has flown by...'
'Go and have the best night ever. You deserve it my darling. I’ll be on stand by for the after party pick up. 'To the moon and back Zachary' (pictured: Stacey's Story)
Stacey shared the post to her Story, writing: 'I'm so proud of you Zach. I love you so much. I can't believe this is it. School done. Now time to find out who you are. To the moon and back...'
Another Story saw Stacey blowing up balloons on the floor with the caption: 'Today has been a a very emotional day. Honestly I don't know where the years have gone...'
'Zachary you are the most kindest wonderful person. Today is so special just like you, we all love you so much have the best time';
'Ahhhhh Zachy looks amazing. Can’t believe he’s all grown up, we’ve watched your babies grow Stacey and that’s such a privilege. Hope you have the best time at your Prom Zachy';
'Gorgeous photos. Hard to believe he was that baby we all saw on X Factor all those years ago. You must be such a proud mama xx'.
Zachary was just 15 months old when a 19-year-old Stacey auditioned for the sixth series of The X Factor, which she would go on to finish in third place.
His father is Stacey's then-boyfriend Dean Cox, and Stacey went on to have Leighton, 12, with her ex-fiancé Aaron Barnham.
With Joe, whom she began dating in 2016, Stacey has Rex, five, Rose, two, and Belle, 16 months.
In May, Joe admitted being a father of six was 'really hard' - his sixth child is firstborn Harry, 16, from a previous relationship.
However, he didn't rule out a seventh, telling the Mirror: 'I never thought I’d be sitting here with six kids.
'So, you never know what life’s going to throw at you. But if it does throw another baby at me there could be worse things.
And he's not alone, as Stacey teased back in January that she wouldn't mind more children either.
Stacey shares Zachary ex-boyfriend Dean Cox, Leighton, 12, with ex-fiancé Aaron Barnham, and Rex, five, Rose, two, and Belle, 16 months, with husband Joe (all pictured)
During an Instagram Q&A, she was asked: 'Are you finished with having babies or would you like more.'
Posting a video of her two youngest children Rose and Belle playing with their toys, Stacey admitted she would never rule out the idea of more kids.
She wrote: 'I can honestly say. My favourite thing in the whole wide world is being a mum. I just get so much joy from watching our little ones grow & getting to be a part of their world.
'I would love more. Whatever will be will be. But omg I love them (Joe will be off to get a vasectomy when he sees this).'