The "Shake It Off" hitmaker looks gorgeous in a pink Reem Acra long dress which featured a plunging, hand-embroidered bodice, reported Ace Showbiz.
In the pictures, Swift, 26, is seen assisting Britany, including holding her hand bouquet and her veil train.
She styled her bob hair in kinky waves and sported her signature red lipstick. Britany also opted for Reem Acra, wearing a traditional-looking, short-sleeved silk taffeta ball gown and cathedral-style veil.