The singer is due to tie the knot on April 6, but said he is growing anxious because he wants everything to be perfect.
He told ITV's Daybreak: "It's only four months away and now I'm starting to get a little nervous. The truth is I know that for a lot of women, this is what they dream of - that day - and I know that that's a big deal for them in their life and they want it to be perfect. I'm a boy, I didn't grow up thinking about my wedding day, so for me, I just want it to be good for her. Really, I just want her to feel like she's had the perfect day."
The Canadian added: "I asked my fiancée if she wanted me to sing and she said no. She said, 'I want Ricardo Montaner'. So now I've got Ricardo Montaner coming."