Marvin Humes posted the photo of him with Alaia-Mai on Instagram alongside the caption: "Daddy's girl."
The adorable photo shows Marvin holding a tiny Alaia-Mai in what looks to be her nursery. The pair are both dressed in white and Marvin can be seen beaming at his new arrival.
On the wall behind Marvin is a cute reference to the new family - three letters, M, R and A.
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The snap comes just a day after Marvin, 28, took to Twitter to gush about his new arrival who was born on Monday.
He said: "I'm completely in love with her..she's absolutely perfect..Rochelle & I are very lucky to have Alaia-Mai..simply the best feeling ever ❤"
Rochelle, 24, followed suit, taking to Twitter to praise her husband's daddy skills.
The Saturdays singer said: "Marvin is a great daddy. Absolutely in love with his princess. Definitely a daddy's girl situation already started. So beautiful x"
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Marvin announced Alaia-Mai's birth on Twitter, saying: "This morning we welcomed our baby girl Alaia-Mai Humes..Mum is doing great & baby is amazing! We are both overjoyed! Thanks for your love x"