The 51-year-old actress, who announced her engagement with McDaid, 38, last June, said the couple have no real plans for their marriage but they want their daughter Coco to perform, reported People magazine.
"Oh, for sure (I want her to sing). It's going to be a whole musical.
"We don't have any plans at the moment. We don't have any firm decisions yet. But it's fun thinking about it and figuring out what to do and when to do it. I'm having fun with that," Cox said.
"Coco is very excited about the wedding. I was going to hire a wedding planner, but apparently she wants to do it.
"She wants to be the maid of honour, which I think is weird. She wants to be the flower girl, all the bridesmaids. She's very excited about it," Cox said.
