The former Xtra Factor co-hosts have been promoted to the main show this series, presenting the X Factor in place of Dermot O'Leary, who left the show this year.
Speaking to ITV's Lorraine today, Caroline said of her show style: "Usually I'm a last minute person when it comes to getting dressed.
"Me and Olly have decided to coordinate everything," she added. "Not too much. But he's really into it, he phones me and he's like 'What colour are you wearing today?' and I'm like, 'Yellow' and he'll turn up at the door in a yellow shirt and I'm like, 'It's too much Olly!'"
We will be keeping a close eye on their outfits from now on and trying to spy the coordinated bits!
Caroline also repeated her stance that she only signed up for X Factor because she wanted to work with Olly again. "It was the Olly Murs thing that did it for me, that made me want to do it," she said.
Unknown to her, Olly had also said he wanted Caroline before he signed the contract. "We were doing the same deal without each other knowing it."