The Saturdays star went all out for her beloved's big day on 18 March, decorating their house with banners and balloons and whipping up a right feast for him.
Is that a breakfast birthday cake we spy in the back?! And cupcakes?! Lucky Marvin!
Rochelle uploaded a picture of beaming Marvin and his three male pals to Instagram, adding the caption: "Set the boys up for their day of golf #happybirthdaymarv."
Love the party hats, boys.
Rochelle marked her man's 29th birthday first thing this morning with a sweet message posted online alongside a picture from their July 2012 wedding.
"Happy birthday to my best friend in the whole world," she wrote. "The best husband and the best dad. Every day you make me feel like a princess. Love you lots."
'What About Us' singer Rochelle also shared the birthday cards that she and daughter Alaia-Mai, born in May 2013, had given Marvin – and, impressively, they looked handmade!
Rochelle wasn't the only one sending well-wishes to Marvin; he also got a birthday shout out from One Direction's Niall Horan, who wrote: "Happy birthday to my big brother/dad, love you bro! Have a great day! I'll call around this week!"
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