Christian Siriano knows Zendaya's wedding dress will be absolutely marvelous.
As the Euphoria star prepares for her upcoming nuptials to fiancé Tom Holland, the fashion designer shared his thoughts on what he believes her gown may look like.
"I think Zendaya probably will wear something vintage," Christian exclusively told E! News at the DKMS Gala in New York City on Oct. 14. "Or it will be very simple."
The Project Runway mentor emphasized that Zendaya—who will be guided by her long-time stylist Law Roach—is "very understated outside" of Hollywood.
"I'm going to ask," Christian noted, playfully adding, "Law would never tell me anyway, but that would be very her."
While Law is keeping his styling for Zendaya, 29, under wraps, he did share an update on where they are amid the wedding planning.
"The process hasn't even started yet," he admitted to E! in July. "Zendaya is working on so many movies. She's now filming the next iteration of Dune, so she's away doing that. It's so many movies, so we have time. We have a lot of time."
As for which designer he expects to see the Spider-Man: Homecoming actress—whose engagement to her Marvel costar was confirmed in January—walk down the aisle in?
The 47-year-old teased that she will be "a secret bride."
With the fashion designer's personal bond with Zendaya being the backbone of their successful professional relationship, he's loved getting a front row seat to her and Tom's romance.
"I'm really excited because I know that they really love each other and they have for a really long time," he gushed. "The fact that the world has been able to share in that love story is really beautiful."
And the Uncharted actor's proposal was no different. After all, Tom's dad shared insight into the preparation behind their engagement.
"He had purchased a ring," Dominic Holland wrote in a January Patreon post. "He had spoken with her father and gained permission to propose to his daughter. Tom had everything planned out… When, where, how, what to say, what to wear…"
As fans wait for Zendaya and Tom to say "I do," keep reading for a look back at their euphoric romance.
-Reporting by Emily Curl
July 2016: Comic-Con Fun
Tom Holland and Zendaya shared a laugh during the Marvel panel event at San Diego Comic-Con International 2016 in San Diego, Calif, ahead of the release of Spider-Man: Homecoming.
May 2017: MTV Movie & TV Awards
The Spider-Man: Homecoming stars spoke onstage at the award show in Los Angeles.
June 2017: Promoting in Spain
Tom and Zendaya attended a photo call for Spider-Man: Homecoming in Madrid.
June 2019: Par-tay
The duo appeared at the after-party for the premiere of Spider-Man: Far From Home in Hollywood, Calif.
September 2021: Birthday Shoutout
Months after their romance was confirmed, Tom gushed over his onscreen and offscreen girlfriend.
"My MJ, have the happiest of birthdays," he wrote, referring to Zendaya by her character's name, in his Sept. 1 post. "Gimme a call when your up xxx"
December 2021: Back to London
The two attended a photo call for Spider-Man: No Way Home at The Old Sessions House in London.
December 2021: Promoting Spider-Man: No Way Home
Tom and Zendaya spoke during SiriusXM Radio's Town Hall with the cast of Spider-Man: No Way Home in New York City.
December 2021: Spider-Man: No Way Home Premiere in L.A.
The actress, in a custom Valentino gown, and Tom, in a Prada suit, posed for pictures at the premiere of Spider-Man: No Way Home in Los Angeles.
December 2021: Celebrating a Dream Fulfilled
After their third Spider-Man film hit theaters, Zendaya heaped praise over her leading man.
"My Spider-Man, I’m so proud of you," she gushed, "some things never change and good thing @tomholland2013."
February 2022: Taking in a New York Minute
The duo dressed to impress as they enjoyed a belated Valentine's Day night on the town in NYC Feb. 16.
June 2023: Tom's 27th Birthday
Zendaya shared this sweet shot of her boyfriend enjoying the water in honor of his birthday.
June 2023: Tom's "Sexiest" Pic Ever
Tom unveiled this beauty for his 27th birthday, joking on Instagram, "A gift from me to you. I thought I'd share possibly the sexiest picture ever taken of me!" Zendaya was into it, reacting with a heart-eye emoji.
March 2024: Acing a Tennis Date
Zendaya channeled her inner Tashi Duncan ahead of her movie Challengers' release during a tennis outing with Tom and her longtime assistant Darnell Appling at the Men's Final of the BNP Paribas Open in Indian Wells, Calif.
April 2024: All Smiles
The two enjoyed a night out in London.
May 2024: In Fair Verona
Zendaya supported Tom after the debut of his play Romeo and Juliet in London, where the pair were seen holding hands following the show.
October 2024: Bero Launch Party
As Tom debuted his non-alcoholic beer company, Bero, Zendaya was by his side in a coordinating burgundy look.
November 2024: Low Key Date Night
While visiting Zendaya in Newbury, Massachusetts, where Zendaya was filming her movie The Drama, the duo popped out for a pint of Bero.
“I’m heading out to a bar to have my first Bero in the wild,” Tom, wrote on is Instagram story alongside a shot of his longtime girlfriend smiling in the background. “I’ll let you know how it goes.”