The Canadian starlet struck up a close friendship with the royal bride in 2011, when the actress relocated from Los Angeles to Toronto to film Suits.
And their bond was clear to see yesterday, with Jessica Mulroney, 38, enjoying a prime viewing spot as Meghan Markle, 36, married Prince Harry, 33.
While the fashion stylist was sitting close to the altar, her children took pride of place in the ceremony, with her twin boys Brian and John, 7, carrying Meghan’s veil as she entered Windsor Castle’s St George’s Chapel.
For the main ceremony, Jessica — who is married to Ben Mulroney, 42, the son of former Canadian Prime Minister Brian Mulroney, 78 — donned a chic midi-length blue dress.
But the Canada-born beauty unleashed her wild side later on in the evening, rocking a truly eye-popping gold gown to the royal wedding after-party.
And thanks to Jessica’s makeup artist Rachel Renna, who shared a bevy of snaps on her Instagram, fans were treated to an up-close-and-personal look at the dazzling dress.
Making sure all eyes were on her, the starlet opted to go braless in the plunging number, which featured a risqué scooped back.
With her bare upper body taking centre stage, Jessica looked in her element as she posed on a staircase ahead of continuing the wedding celebrations.
Meg’s treats her fans to a glimpse of her hot pink bra
“Proud friend. Proud mum”
Allowing her curves to speak for themselves, Mulroney made a beauty statement with dramatic smokey eyeshadow and a glossy lip.
Having styled her long, brunette locks in a high ponytail, the rising starlet was more than ready for the fun to begin.
In one behind-the-scenes video, Jessica showed off her cheeky side as she stuck out her tongue while having her makeup applied.
Making the most of her moment in the spotlight, the mum-of-three took time out to pose alongside her husband Ben, who looked dapper in a tux.
Meghan and Harry have married
While Jessica’s team were more than happy to update fans, the designer remained tight-lipped on her own social media, posting just one photo from the Royal wedding.
The professional snap captured Meghan as she walked up the stairs of the chapel.
With the former actress’ long Givenchy wedding dress trailing behind her, Jessica’s twin boys dutifully carried the veil.
Captioning the moment for her 171k followers, Jessica wrote: “Proud friend. Proud mum.”