The former Spice Girl looked stunning on her big day wearing a backless white wedding gown with lace overlay and sleeves. She arrived to cheers from fans who had waited outside the church for Geri to arrive.
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Geri Halliwell has married Christian Horner
The happy couple later emerged from the church as husband and wife and greeted the crowds with a kiss.
The completely couture dress was designed especially by Phillipa Lepley, a Chelsea based designer, together with Geri. Accessorised with a long veil and two pearl bracelets, and the beaming bride could not keep the smile from her face as she arrived at the church in a vintage Rolls Royce.
Geri and her daughter Bluebell before the ceremony
Geri was accompanied down the aisle by her nine-year-old daughter Bluebell, who was wearing a blue dress with a large floral crown made up of freesias.
Alongside Bluebell, Geri was also joined by her fellow Spice Girl Emma Bunton's sons, Beau and Tate.
F1 boss Christian had arrived at the venue with his best men at around 3pm on Friday afternoon, looking calm and relaxed as he prepared to walk down the aisle in a sharp three-piece suit.
Christian Horner appeared relaxed ahead of his wedding
While Christian awaited the arrival of his bride, she excitedly shared her preparations with fans on Instagram, including a glimpse at the vintage earrings and diamond bracelet she had chosen to accessorise with on her big day.
The happy couple said their vows in front of guests including Myleene Klass, Amanda Holden and Mr. T. Geri was also said to be "delighted" that her former bandmate Emma Bunton was able to be involved in her special day.
Melanie Brown was thought to be attending, but instead tweeted her love to Geri over social media site, Twitter, writing: "@gerihalliwell wishing you the most beautiful special day of your life,I love you xxxx".
Victoria Beckham meanwhile shared an old picture of the pair in their Spice Girls day, writing: "My beautiful friend @gerihalliwellofficial Sending u love and happiness. I'm so sad I couldn't be with you on your special day x I love u x ?❤️"
Geri and Christian began dating in early 2014 after being friends for many years.