Photo: Courtesy of Zac Posen1/30The bride wore a custom Zac Posen wedding dress featuring a strapless sweetheart neckline and multiple layers of striped tulle.
Photo: Courtesy of Zac Posen2/30The boning inside the corseted bodice of Katharine McPhee’s custom Zac Posen wedding dress.
Photo: Courtesy of Zac Posen3/30The dress beautifully incorporated multiple layers of striped tulle, and designer Zac Posen was a guest at the wedding.
Photo: Robert Shack / Banana Split4/30Katharine McPhee awaiting the arrival of her guests.
Photo: Robert Shack / Banana Split5/30A pre-ceremony bridal portrait of Katharine McPhee in her custom Zac Posen wedding dress.
Photo: Robert Shack / Banana Split6/30Descending the stairs in custom Zac Posen.
Photo: Robert Shack / Banana Split7/30En route to the Church of St. Yeghiche in the South Kensington district of West London.
Photo: Robert Shack / Banana Split8/30Walking down the aisle solo at the Church of St. Yeghiche.
Photo: Robert Shack / Banana Split9/30Katharine McPhee and David Foster exchanging rings and reciting vows.
Photo: Robert Shack / Banana Split10/30
Photo: Robert Shack / Banana Split11/30
Photo: Robert Shack / Banana Split12/30The bride and groom were all smiles during the ceremony.
Photo: Robert Shack / Banana Split13/30The Fosters!
Photo: Robert Shack / Banana Split14/30A post-ceremony bridal portrait.
Photo: Robert Shack / Banana Split15/30The newlyweds posing for pictures at the Church of St. Yeghiche.
Photo: Courtesy of Zac Posen16/30
Photo: Robert Shack / Banana Split17/30The bride sitting pretty in her custom Zac Posen wedding gown.
Photo: Robert Shack / Banana Split18/30The bride posing with her six-layer wedding cake.
Photo: Robert Shack / Banana Split19/30Stopping to smell the roses.
Photo: Robert Shack / Banana Split20/30The happy couple post-ceremony.
Photo: Robert Shack / Banana Split21/30The bride changed into her second look of the day—an off-the-shoulder Zac Posen dress—for dinner.
Photo: Robert Shack / Banana Split22/30Descending the stairs for dinner.
Photo: Robert Shack / Banana Split23/30The Fosters making an entrance!
Photo: Robert Shack / Banana Split24/30The happy couple at dinner.
Photo: Robert Shack / Banana Split25/30Roger and Mirka Federer enjoying the performance at dinner.
Photo: Robert Shack / Banana Split26/30A post-dinner group picture.
Photo: Robert Shack / Banana Split27/30Before cutting the cake, the bride changed into a pale blue tea-length Zac Posen dress, her third look of the evening.
Photo: Robert Shack / Banana Split28/30The couple cutting the cake.
Photo: Robert Shack / Banana Split29/30Party time!
Photo: Robert Shack / Banana Split30/30Happily ever after!

