The Saturdays singer looked beautiful in her bright dress as she joined husband Marvin for their second stint as This Morning presenters.
Marvin tweeted ahead of their appearance: "Morning!!! Arrived at studio very excited for today!"
Rochelle and JLS' Marvin launched the show by chatting about their Halloween, telling viewers they'd been hoping for no trick or treaters at their door. Not because they aren't Halloween fans but because baby Alaia-Mai was sound asleep in bed.
They also shared some light hearted jokes after introducing a segment about partners changing their other halves' fashion. Rochelle admitted she wasn't a big fan of Marvin's V-necked jumpers when they got together, though thankfully he stopped wearing them!
The final segment of the show featured a blast from the past for Marvin. As the couple settled down with Rylan Clark to talk about last weekend's X Factor, producers played footage of JLS during their time on X Factor.
With Disco Week approaching on X Factor this weekend, Marvin explained it was Disco Week during his time on the show that was the turning point for the band.
"That's the week it all changed for us as Aston took lead for that song," he said. "We were in rehearsals and Simon Cowell came to us and said we were doing it all wrong, too many of us trying to do too many parts, so Disco Week changed it for us."
Later, during a discussion of the X Factor panel and rumours that Simon and Cheryl Cole could return, Rochelle admitted to having a girl crush on Cheryl! (As plenty of us do!)
Rochelle and Marvin's hosting was once again well-received by fans, who took to Twitter during the show to gush about what a "perfect" couple they are.
One fan wrote: "Marvin & rochelle are just perfect together." Another added: "Marvin and Rochelle are amazing tv presenters and they are such an amazing couple!"
A third viewer joked: "When Marvin speaks Rochelle just sits and looks at him, wonder if she's baffled at how beautiful he is too."
Rochelle tweeted after the show: "Thanks to everyone who tuned into @itvthismorning! That was nerve-wracking but SO fun!"