updated 09/13/2012 AT 3:00 PM ET
•originally published 09/14/2012 AT 3:35 PM ET
As PEOPLE initially reported, the Gossip Girl star’s pal Florence Welch (of Florence + the Machine) was on hand to perform at the reception, where she sang three songs (including “Cosmic Love” and “Somewhere Over the Rainbow”) as a gift to the couple. And a deejay spun tunes at the reception, held in a tent near the Cotton Docks at Boone Hall Plantation in Mt. Pleasant, S.C.
But that wasn’t all.
A choir of 10 children, from First Baptist Church, sang “Can’t Take My Eyes Off of You” by Frankie Valli, as the bride walked down the aisle Sept. 9.