white wedding 
noun British
A traditional church wedding at which the bride wears a formal white dress.The bride wore a traditional white wedding gown, lifted with swathes of tulle in pale cream....
- Wearing a beautiful white wedding dress and a long trailer behind her, Julie Sarandon walked down the aisle with her father.
- Christians would have a church wedding, and we all know that some girls still dream of the white wedding in a large church with the traditional flowers and organ grinder, but there is a new way to get married.