'Bridgerton' star Nicola Coughlan says the Featherington sisters were modeled after the Kardashians

• "Bridgerton" star Nicola Coughlan said the Featherington family is loosely based on the Kardashians.
• Coughlan tweeted on Tuesday that the cast would regularly discuss the reality stars during fittings.
• Kardashian West said she was "freaking out" at Couglan's message and asked to visit the set.

Warning: Spoilers ahead for season one of "Bridgerton."

Netflix's "Bridgerton" is set in early 19th century England, but several modern-day touches are sprinkled throughout the record-breaking Regency romance.

Beyond showing sex scenes through the female gaze and incorporating string-quartet covers of hit songs like Ariana Grande's "Thank U, Next" and Billie Eilish's "Bad Guy," three "Bridgerton" characters were modeled after today's most famous reality stars.

According to Irish actress Nicola Coughlan, who plays Penelope Featherington, the Kardashians served as the blueprint for the Featherington sisters.

"Does @KimKardashian know that the Kardashians were a massive inspiration for the Featheringtons?" Coughlan tweeted on Tuesday.

On "Bridgerton," the Featheringtons are three of the most over-the-top, gaudy bachelorettes on London's highly competitive marriage market. When it came time to adapt the Featherington sisters from Julia Quinn's Bridgerton novels to the small screen, Coughlan said they looked to the most famous reality stars on the planet.

"We talked about them all the time during our fittings," Coughlan wrote, referring to her costars Bessie Carter and Harriet Cains, who play Prudence Featherington and Philipa Featherington, respectively.

Coughlan said the trio would regularly discuss which "Bridgerton" character was most similar to Kim Kardashian West, Khloe Kardashian, and Kourtney Kardashian.

She said Prudence and Philipa's tight-knit friendship mirrored Khloe and Kourtney's relationship, as the sisters have teamed up for multiple spin-off shows. And Penelope, a young socialite that secretly pens gossip columns under a pseudonym, has the same entrepreneurial spirit as Kim, who recently joined Forbes' list of billionaires.

"I think Prudence and Phillipa are very Kourtney and Khloe cos they're besties, and Pen is a very successful business woman, also I remember Kim being like a very good detective too so there's that," she tweeted.

Kim was flattered by Coughlan's comparison and asked to visit the 'Bridgerton' set

Kim responded to the "Derry Girls" actress shortly thereafter, explaining that someone from her "Bridgerton" group chat forwarded the tweet.

"WHAT?!?! I am freaking out!!!!!!" the SKIMS founder wrote, continuing, "Can I please come to a fitting?!?! It would make my whole life!!!!!!"

Coughlan replied that the "Bridgerton" cast and crew would "love" to have the "Keeping Up With the Kardashians" star visit the set in the UK, where they're currently filming season two.

She also noted that her character is linked to Kim in more ways than one.

"Also did you know that Mr Pearl made your corset for the Met Gala and the very next one he made was mine for Bridgerton?" she tweeted, referencing Kim's 2019 Met Gala costume.

Coughlan added, "You've been part of the Bridgerton world for longer than you know!"

Coughlan has been a fan of Kim for a long time

Earlier this month, Coughlan told Elle that she's "always been a big fan of Kim" and believes that Penelope emulates the reality star in many ways.

"The Featherington family were sort of based on the Kardashians, which our costume designer Ellen Mirojnick very much modelled us around. There was one very ambitious mum and her three daughters, who were all very different. I would like to think Penelope is the Kim, I'm just going to claim that she is," she said.

The actress previously encouraged Kim to give the historical drama a chance toward the end of January, when the reality star asked her Twitter followers if she should watch "Bridgerton."

Coughlan responded, "I'm biased, but yes."

The 'KUWTK' star became 'obsessed' with 'Bridgerton' last month

Kim finally got around to binging the first season of "Bridgerton," which has become Netflix's top series of all time following its December release, in late March.

She told fans she was "obsessed" with the show on her Instagram story, later reacting to Netflix's announcement that breakout star Regé-Jean Page will not return for season two by saying she was "not OK."

After Kim finished the first eight episodes, which are based on Julia Quinn's 2000 novel "The Duke and I," she made her sisters Khloe and Kendall Jenner watch it as well.

Coughlan previously called the Featheringtons the 'Kardashians of Regency London'

Long before the KKW Beauty founder ever turned on the first episode of "Bridgerton," Coughlan had already made the comparison between the Featherington sisters and the Kardashians.

In January, she shared a photo of the Featheringtons posing together in bright costumes.

"They don't call us the Kardashians of Regency London for nothing," she wrote.