Blake Lively and Ryan Reynolds reportedly vowed to "make each other laugh" at their secret wedding on Sunday.

The couple allegedly exchanged vows at Boone Hall Plantation in Mount Pleasant, South Carolina the setting of romantic movie The Notebook.

Now touching details of the ceremony have been revealed.

"They promised to support and love each other and to make each other laugh," a source told People magazine.

"The groom said he would treasure Blake; she said she would adore him. The whole time they were beaming."

The bride, dressed in a Marchesa gown, invited her close friend Florence Welch to sing at the ceremony.

The lead singer of British band Florence + the Machine performed Somewhere Over the Rainbow while the guests including Blake's The Sisterhood of the Traveling Pants co-stars watched on.

"The bride's eyes started to well up," the source revealed. "A lot of people started to well up, actually."

Blake and Ryan had been dating for a year after meeting on the set of Green Lantern in 2010.