The JLS star and his Saturdays wife Rochelle Humes became parents to their first child on 20 May and, like most new dads, Marvin is completely smitten!
Gushing to Capital FM, he said: "It's just the most beautiful feeling, it's hard to explain. People always say how lovely it is but until it happens to you, you're just filled with such emotion that you've never felt before."
Marvin added that he and Rochelle feel "very lucky", saying: "The responsibility and the love and the togetherness is just amazing."
The proud new parents shared a beautiful picture of themselves posing with little Alaia-Mai this week. The baby definitely has their gorgeous genes, doesn't she?!
Marvin gave a guest DJ set at the Capital FM Summertime Ball at the weekend, and is also the new voice of the Capital weekend having landed a Saturday night show in addition to his Friday night slot.
Last night, the 'She Makes Me Wanna' star enjoyed a date night with Rochelle in London, taking in a showing of The Bodyguard musical.
Before leaving, he tweeted: "My favourite night of the week.. Date night with my beautiful wife."
Later, he added: "Went to see @TheBodyGuardUK with my wife..great night out! Lovely dinner before..great date night! Now home to our angel! LovingLife."
Stars who congratulated Marvin and Rochelle on their baby news!