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Chloe, 28, whose bridesmaids were her famous sisters Poppy and Cara Delevingne, sported a stunning strapless gown and wrapped up against the cold in a cream fur cape.
The bride accessorised her look with silver heels and a statement diamond necklace, wearing her brunette hair in an elegant half ponytail.
Groom Ed paid tribute to his new wife by writing a heartfelt message on Instagram.
"I am the luckiest man alive to be marrying this incredible woman today," he wrote. "We are having a family only ceremony but please know we will be thinking of all our friends and missing you terribly and can't wait to celebrate at the big event in 2015 - love to all xxx."
The bride's model sisters, Poppy and 21-year-old Cara Delevingne looked chic in their navy bridesmaids dresses, with model Cara wearing strappy black heels and a mink-coloured overcoat.
"What an amazing day!" Tweeted Cara. "@cdelevingne @eddiegrant #wedding."
"LOVEBIRDS," added Poppy with a picture of the beaming newlyweds at their reception.
This is Chloe's second wedding. In 2008 she tied the knot with Louis Buckworth, believed to be Ed's best friend, at St Paul's Cathedral, although the pair called time on their marriage 17 months later.