Jamie Oliver's wife Jools melts hearts with bath time snap of new baby

Jamie and Jools Oliver attend a screening in London, England. Photo / Getty

They celebrated the birth of their fifth child just over two months ago.

And Jamie Oliver and wife Jools' baby son River Rocket is already showing signs he's a cheeky chappy, just like his father, in a sweet snap of the newborn at bath time.

Jools, 41, posted the adorable photograph on Instagram, along with the caption: 'Happy Monday'.

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Happy Monday 🚀❤️

A post shared by Jools Oliver (@joolsoliver) on Oct 31, 2016 at 12:11am PDT

She and TV chef Jamie, 41, also have four other children: Poppy Honey, 14, and Daisy Boo, 13, Petal Blossom, seven, and son Buddy, six.

Last week, Jamie posted a cute snap of himself cuddled up to his youngest three as they spent time in the great outdoors.

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Good morning guys "Kids Eat Free in Half Term" in all the Jamie's Italians across the UK. So for all those parents & guardians out there enjoying half term It's our award winning kids menu, lots of organic produce being used every choice is a good one nutritionally and I've tried to make it extra fun we have vegetable seeds they can take home and grow as well as the usual colouring in stuff and of course old school view finders for the menu choices :):) anyway have a great half term guys and I hope you find this useful if your around any of our restaurants pop in the team are ready to welcome you big love jamie x x x oh and these are my new glasses if you were wondering x x

A post shared by Jamie Oliver (@jamieoliver) on Oct 24, 2016 at 1:02am PDT

Wearing a brown plaid scarf and black jacket, Jamie looked proud as punch as he grinned into the camera with his little ones.

Petal looked the spitting image of model mum Jools, while Buddy cheekily grinned with a blade of grass poking out of his mouth.

Jamie wrote: 'Good morning guys Kids Eat Free in Half Term in all the Jamie's Italians across the UK.

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Big love from me and the gang folks: happy Friday jox x x x hope you all have a great weekend

A post shared by Jamie Oliver (@jamieoliver) on Sep 30, 2016 at 12:38pm PDT

'So for all those parents & guardians out there enjoying half term It's our award winning kids menu, lots of organic produce being used every choice is a good one nutritionally.'

Finally, referring to his brand new eye-wear, the father-of-five explained: 'Oh and these are my new glasses if you were wondering x x'

Jamie recently dismissed rumours that he might be taking over Great British Bake Off judging duties from Paul Hollywood and Mary Berry, saying didn't have the time to work on GBBO.

'I haven't been asked to do any work on it,' he explained. 'I haven't got the time to do it. I couldn't do it even if I wanted to.'

After welcoming little River into the world, the celebrity chef insisted he and Jools won't be trying for a sixth child.

Jamie told Heat magazine: 'I really don't think so. Personally, I never thought I'd have more than two kids, but our family feels very complete now. I'm grateful that Jools is such a brilliant mum.'

And the doting dad admitted finding out Jools was pregnant for a fifth time was quite a surprise.

Jamie Oliver, Jools Oliver and their family pose with their new baby at The Portland Street Hospital on August 8, 2016 in London, England. Photo / Getty

Speaking when his wife revealed her pregnancy, Jamie said: 'I love kids. My family keep me honest, I have a weird job, a weird life, but my family keep me quite real.

'This will be the last one. It is just getting ridiculous otherwise. This was not expected. I can't even believe I'm saying it. My own family were shocked too.'