Kyle Richards Proves Portia and Alexia Umansky are "Twins" in a New Photo: "This is Crazy"

To celebrate the holiday season, Kyle Richards and Mauricio Umansky traveled to their vacation home in Aspen, Colorado, with their daughters, Alexia Umansky, Sophia Umansky, Portia Umansky, and Farrah Brittany (who is Kyle's daughter from her first marriage).

For the occasion, the girls were sure to document their gorgeous, wintery looks, as evidenced in this photo Sophia shared to her Instagram. While were enthralled with The Real Housewives of Beverly Hills kids' fashionable outfits, including Farrah's brown leather and shearling coat and Sophia's cerulean blue fur coat, we also couldn't take our eyes off Alexia and Portia's undeniable resemblance to each other.

Apparently, we weren't alone, as numerous followers in Sophia's post noted how much the two girls looked exactly alike. Then, following the post, Kyle took to her on Instagram to share photos of the girls, having her own realization about their resemblance in the process.

Kyle Richards shows how much her daughters Alexia and Portia Umansky look alike

Before reflecting on how her second oldest and youngest daughter looked alike, Kyle first shared the group photo of the girls in Aspen with a sweet message.

"I love them so much," the proud mom wrote, also adding a red heart emoji into the mix for good measure.

Kyle posts a photo of her daughters to Instagram Stories. Photo: Kyle Richards/Instagram

Then, following that post, Kyle shared a close-up photo of Alexia and Portia, this time with Portia smiling just as big as her older sister.

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"This is crazy," Kyle wrote over the snapshot, also adding a sticker that read, "Twins," to point out how much to the looked alike.

Kyle posts a photo of Alexia and Portia together to Instagram Stories. Photo: Kyle Richards/Instagram

We have to admit: the resemblance is uncanny!

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In addition to Portia looking like Alexia, we're also amazed at how grown up she looks, considering we've kept up with Kyle's youngest daughter since her mom's debut on RHOBH in 2010, when she was only a few years old.

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Back in March, around Portia's 15th birthday, Kyle reflected on how much her youngest child has grown, sharing a throwback photo of Portia as a little girl and writing, “Where did the time go?”

In Kyle’s next Story, she shared a recent photo of her daughter. “We are officially the same height,” she captioned the pic, which showed her standing next to the teen.

Photo: Kyle Richards/Instagram

The mother-daughter duo were even dressed alike in the pic, wearing long-sleeved navy tops, dark pants, and cozy, brown suede slippers.