The MTV presenter has admitted that being quizzed about busts by the chat show host was an interesting experience.
"I don't think he actually knew what side boob was," Laura said. "When he showed the picture I was like, 'That isn't a side boob -- have you ever seen one?'"
"I think it was funny and he felt more uncomfortable about it then I did. We were there to talk about the charity I work with, Plan Ireland, and their photography exhibition Her Story, but he has to ask those silly questions for a bit of fun.
"I think he felt as awkward about it as I did. But I've known Ryan for years and think he's great. I love him to bits -- he's very good at mixing warmth and humour."
"The Late Late Show is something you grow up with. And Gay Byrne was there too, so it was great being on it."
MTV star Laura, who has been announced as the new face of Pond's skincare, also revealed she was fully booked until the next installment of I'm a Celebrity Get Me Out of Here.
"I am presenting the Scottish Fashion Awards, then I'm over in Amsterdam for the European Music Awards and then I go straight to Australia for seven weeks of I'm A Celebrity so it's all go," she said.