Kitten and her two wives are expecting their first baby this year.

Doll, Kitten and Brynn are three married women living in the US. All sounds pretty run-of-the-mill, right?

Except that all three are married to each other — having been joined together in a beautiful ceremony last August — and they’re all about to become mums to their first child together.

The youngest of the happy Massechussets trio, 27-year-old Kitten, is pregnant after undergoing IVF treatment using an anonymous sperm donor, and the mothers-to-be are looking forward to welcoming their baby girl in July.

Brynn, 34, told the UK Press the so-called “throuple” hoped to have three children together.

“We always joke that the children should never outnumber the parents,” she said.

Kitten said they all decided she’d be the one to carry the babies because she’s happy to become a full-time mum.

“When our daughter arrives in July, I’ll be the one changing the nappies and doing the feeds,” she told the Daily Mail.

It was also Kitten’s idea that the three tie the knot.

“I had a very traditional upbringing and marriage had always been an important symbol of commitment for me,” she said.

“We wanted to celebrate our love in a wedding like everyone else.”

Because being married to more than one person is currently illegal in the UK, Brynn and Kitten are legally married, while Doll is ‘handfasted’ to both to ensure the trio are as equally married to each other as possible.

Each member of the throuple was married in a traditional white bridal gown and all three of their fathers walked them down the aisle — a gesture that was particularly poignant for Kitten.

“My father had stopped talking to me for a period of time after I came out as not only gay, but as also dating two women,” Kitten told the Daily Mail.

“Shortly before the wedding, the bonds were mending, just in time for my father to be hospitalised. There were serious concerns about whether or not he would be able to walk his last daughter down the aisle,” she said.

“So (the aisle walk) was one of my most meaningful moments.”

The celebrant’s personalised introduction to the ceremony included the following moving words, according to Offbeat Bride:

Today we have gathered to witness the union of Brynn, Kitten and Doll. We are here today to offer them our love and our blessings as they embark on the next phase of their lives together.

To some, they represent the “slippery slope” we were warned about. In truth, what they are about to do today is as old as mankind…

Ecclesiastes 4:12 says that though one person may be overpowered, two can support each other, and a chord of three strands is not quickly broken.

Three strands.

Today, Brynn, Kitten and Doll will forge their own three-strand chord.

Brynne described the trio’s wedding vows as “an intense emotional moment.”

“After we said our vows, Doll and Kitten kissed me first then each other,” she told NY Daily News.

“Few times in my life have I been moved so quickly and easily to tears and felt so much joy and love.”

Brynn and Doll were originally in an exclusive relationship, although both had enjoyed ployamorous relationships before. They eventually met Kitten on OKCupid after setting up a joint online dating profile.

But despite their atypical set-up, the trio insist that their relationship is similar to many monogomous relationships, largely consisting of sharing meal times, watching TV after work and sharing a bed.

Brynn, whose last name Kitten and Doll took after the wedding, works a 40-hour week to bring home the money, while Doll does the cooking and Kitten the cleaning.

The only difference is that communication requires some extra work, 30-year-old Doll said.

“There are three people so our relationship takes detailed scheduling – everything we do goes on the calendar,” she said.

Brynn told The Daily Mail that she wishes for the trio’s relationship style not to be stigmatised.

“Poly-fidelity is not something seedy or something that’s meant to be hidden away,” she said.

“It can be a perfectly acceptable and functional choice of life and love.”

We’re wishing them all the very best.