Melanie "Mel B" Brown is married!

The Spice Girls star, 50, tied the knot with hairstylist Rory McPhee in a romantic ceremony in The Crypt of St. Paul's Cathedral in London, England, on Saturday, July 5.

Mel B wore an ivory custom gown from Josephine Scott for her nuptials, and later changed into a dress from designer Justin Alexander. “Mel was a dream to work with, bringing her own sense of style to the occasion,” Caroline Black, the owner of Evelie Bridal Boutiques in London, who helped the musician pick out her wedding attire, tells PEOPLE.

Following the ceremony was a star-studded reception at the Shangri-La Hotel inside The Shard, the United Kingdom's tallest building.

Among the celebrity guests in attendance were "Baby Spice" Emma Bunton, plus Cara Delevingne, Katherine Ryan and Daisy Lowe.

Mel B's three daughters were her bridesmaids. Scary Spice shares her eldest daughter, Phoenix, 26, with her first ex-husband, Jimmy Gulzar. The former couple were married from 1998 to 2000. Mel B's second daughter, Angel Iris, 18, is from her previous relationship with ex-boyfriend Eddie Murphy. The bride's youngest daughter, Madison, 13, is shared with her second ex-husband Stephen Belafonte, whom she was married to from 2007 to 2017.

The America's Got Talent: Fantasy League judge was permitted to marry McPhee, 37, at St. Paul's Cathedral — the same church where Princess Diana and then-Prince Charles married in July 1981 — because she received the distinction of becoming a Member of the Order of the British Empire (MBE) from Prince William in 2022 for her work bringing awareness to domestic violence issues.

“It’s a big deal because when you get married there — not many people are allowed to get married there. You have to be kind of special,” Mel B shared of the iconic church on the May 14 episode of The Tonight Show Starring Jimmy Fallon. 

The nuptials come a few weeks after the singer celebrated her bachelorette party seaside in a leopard-print bikini alongside 36 of her closest loved ones.

In an Instagram video, she could be seen dramatically rushes to meet her three dozen friends at the end of a dock by a large blue body of water. On the way, she ripped off a long white lace swimsuit cover-up.

The group of women, who all wore leopard-print bathing suits, then did a choreographed dance to the tune of "End of Time" by Beyoncé.

Mel B revealed that her family-friend-turned-boyfriend — who worked with her on The Masked Singer — popped the question in 2022 while they were on a getaway in Berkshire, after the pair had been dating for three years.

“He said, 'I love you, you're my best friend and I want to spend the rest of my life with you,’ ” she recalled while discussing her engagement on Celebrity Gogglebox in October 2022. "There were rose petals everywhere, a log fire, a hotel — which was Cliveden. It was very romantic. I love flowers."

Mel B previously swore she'd never wed again after her two divorces. Luckily, McPhee helped her believe in love again.

“I was like, ‘I'm never going to get married again. Never, never, never. I'm never having a relationship. I'm fine by myself. I want to raise my kids, put my head down and work, and that's it,’” Mel B told PEOPLE in March 2024. “And then… never can say never, can you?”

She continued, “I believe in love, and clearly the other two marriages turned out to be not love, from their angle. So I feel like I've really missed out, and now I've got this opportunity to be properly in love with a really good guy who I know loves me for me, who's known me before I was a Spice Girl, why wouldn't I do that?”