Gwen and Terence are getting married today in Ceridwen's Grove just outside of town. Don't worry, Terence paid for lots of warming charms to keep everyone warm. Issy, Tristan, and Ronnie were bridesmaids.
Here is the inspiration board if you want to see the dresses and get a feel for what it was like. If your character got an invitation or would have been the plus-one of someone who got an invitation (which combines to be... pretty much everyone), then Gwen hopes you were there to celebrate her special day.