The mum-of-four, who has three sons from her previous relationship with footballer Jamie O'Hara, has received praise from fellow mums for sharing the 'real' picture, which shows a breast milk stain on her top.
The make-up free 33-year-old, who welcomed her fourth son just last week, looked natural and comfortable in her pyjamas while showing off some new baby clothes.
Fans of the former model applauded her appearance, with one saying: 'As a breaatfeeding mammy love a good leaky boob 😂😂😂'
'Keeping it real with the leaky boob 😊 Oh remember those times so well! Congrats!' agreed another of Danielle's 444k followers, while a third complimented the new mum's decision not the edit the pic, noting: 'Love the fact she hasn't photoshopped out the leak.'
Some mothers took the opportunity to discuss and compare maternity stages. 'I started leaking at about 20 weeks' one said, followed by another who admitted: 'mine leak all the time and I'm 31 weeks!'
Danielle herself addressed the conversation, responding to one fan who'd remarked on the stain and saying: 'lol can't beat a leaking boob 😂 keeping it real for all us mammas 🙌🏻'.
She also used her Instagram account to let her fans know that - as a busy mum of four - she had begun a new eating plan, sharing a picture of 12-prepared dishes.
'Looking forward to Starting my @prepfooduk today it's hard to get time to cook with 4 kids so trying to look after myself putting the right foods in to keep me going,' she wrote.
The name for baby number four has yet to be announced, though according to the Daily Mail Danielle has explained previously: 'We've got a short list of names that we really like and Ronnie is obviously one of them.'
'My granddad is called Ronnie so I really love that name and it would mean a lot for me to call the baby Ronnie, we haven't actually chosen it yet though.'