In the photo, uploaded to Instagram on Friday morning (20 September), JLS star Marvin can be seen cradling little Alaia-Mai, who has her back to the camera.
As you'd expect, fans began gushing over the sweet snap in their droves with comments including "best family ever", "one proud daddy there" and "that is the cutest thing I've ever seen".
Saturdays star Rochelle gave birth to the couple's first child on 20 May, and they released a gorgeous family photo the following month, giving fans their first glimpse at beautiful Alaia-Mai.
They added the caption: "We know you guys have been wanting to see a picture of our little Princess. Mummy and Daddy are very over protective but here's a precious picture, she's a little camera shy."
Since then, the pair have only shared one other picture of Alaia-Mai. Again, her back was to the camera as she joined Rochelle in the recording studio. Keep the pics coming, we say!
Marvin has made no secret of how much he's loving being a dad, tweeting just last night: "Big weekend ahead! Just kissed my Princess goodnight..she has NO idea how much she's loved by Mummy and Daddy!"
He was also quick to congratulate Union J singer JJ Hamblett on news that he's about to become a father, telling him: "Amazing news that you're expecting your first baby..it's the BEST feeling ever!"
Life in the Humes household is about to get very busy as Marvin's just joined The Voice UK as a co-presenter for the third season, which starts in January 2014.
He's also got several more commitments with JLS before the band call it quits later this year, including a Greatest Hits album and a farewell tour.
Rochelle, meanwhile, is back on full time duty with The Saturdays following maternity leave and has resumed work on BBC Three panel show Sweat The Small Stuff.
The Saturdays are currently promoting new single 'Disco Love' and their new album Living For The Weekend is released on 14 October. They'll perform 'Disco Love' live for the first time on tomorrow night's Stepping Out.
JLS' best moments in pictures:
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