Rochelle and husband Marvin Humes, 32, welcomed their second daughter, Valentina Raine, back in March.
The couple, who married in 2012, are also proud parents to four-year-old Alaia-Mai. They keep them out of the spotlight and rarely share snaps of them both.
But singer Rochelle, 28, has shared the cutest pic as she shared a cuddle with her baby daughter Valentina, five-months.
The Saturdays' Rochelle captioned the special moment: "When your cuddle game is strong and she falls straight to sleep..."
The photo shows Rochelle holding her tot and she smiles for camera.
Even though Valentina's little face is covered by Rochelle's hand her super-adorable brunette curls were enough to send fans into meltdown.
One fan commented: "Her hair is so cute 😻I love her curls."
Another praised the presenter for keeping her children's face hidden in photos. They said: "I love that you keep your children's identities secret.
"Too many people sell every aspect of their private lives and I think kids should be shielded from this."
"Those curls 😍😍," a third gushed.
I love that you keep your children's identities secret.
Rochelle and Marvin were "delighted" after welcoming Valentina into their family.
Proud dad Marvin took to Twitter to announce the happy news, and share the first photo of his wife and their new arrival.
He captioned the picture – which shows a stunning Rochelle in her hospital bed, cradling and looking adorably at the newborn – with: "Couldn't be a happier or prouder man, what another incredible blessing!
"My beautiful wife gave birth to our 2nd girl Valentina Raine Humes x."
Rochelle also posted the same image, saying “Our world is now complete. Valentina Raine Humes - Happy birthday little one.”
Rochelle gave birth to their first child Alaia-Mai in May 2013.
Earlier in the year Rochelle revealed that Alaia-Mai couldn't wait to become a big sister and was thrilled over their new arrival.
She said: "Our little girl is so desperate to have a sister I warned her, ‘What happens if you have a baby brother?’
“She replied ‘We’ll just send it back’. I’m trying to tell her it doesn’t work like that!
“Alaia-Mai is so excited about being a big sister and I hope it stays that way."
We're sure she's a great big sister!
Former JLS star Marvin and wife Rochelle recently celebrated their fifth wedding anniversary.
They tied the knot on July 27 2012.
The two exchanged their vows at a summer ceremony at Blenheim Palace in front of their close friends and family.
To mark the special milestone Rochelle shared a series of snaps showing her gorgeous dress, the incredible venue and a selfie with Marvin flashing her spectacular diamond ring.
In the first of many pictures Rochelle uploaded a throwback pic to the special day.
She captioned it: "27. 7. 17 💒 Happy Anniversary Mr H. 5 years ago today I said "I DO" and I'd say it over and over again.
"My rock, my best friend and I fancy the beeppppp out of you. Here's to 155 more ❤️."
She then went on to share a photo of the reception venue which was decked out in lavish style.
Another showed off the presenter's stunning dress as she wrapped her arms around her beau.
Marvin also shared a heartfelt message to his other half: "27th July 2012 was the happiest day of my life. I married my best friend and soulmate.
"5 incredible years have passed and everyday just gets better and better. Rochy thank you for giving me everything I've ever dreamed about.
"You're the most incredible Mother and all I ever hoped for and more in my Wife.
"I look forward to our next 50 years together where we'll be forever loving and laughing.
"Today we'll be celebrating like it's day one. Love you baby. Happy Anniversary. Marv x," alongside a montage of photos from their special day.