An Ontario woman says she was "overwhelmed and overjoyed" when she saw that her long-term boyfriend had planned a surprise wedding attended by more than 200 guests.

Shawn Lippert, of Tecumseh, Ont., popped the question Saturday and then surprised his bride-to-be with some big news: the wedding was planned and ready to go.

Colleen Lippert told CBC's Connect with Mark Kelley that the wedding was "romantic and beautiful and a fun time."

She said she loved the day and was able to enjoy the moment — in part, because she didn't plan it.

"He did a wonderful job, it was perfect," she said. "I didn't even have to think about it. I just had to be a part of it and go with the flow."

Would you say yes to a surprise wedding? Let us know what you think about Operation White Cake.