Joanna Gaines and her lookalike sister Mary Kay are #SisterGoals

Joanna Gaines and her little sister are #SiblingGoals! 

The "Fixer Upper" star is definitely all about family, and her relationship with her sister Mary Kay is proof. While not much is known besides Jo's lookalike sister, we did get a peek into their adorable sister relationship during a season 5 episode of "Fixer Upper" when Chip and Jo renovated a home for Mary Kay, her husband and their six children. 

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Joanna Gaines and her lookalike sister
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Joanna Gaines and her lookalike sister
Today's house was my all time favorite #fixerupper ...we got to reveal this house to my sweet sis and her family of seven (going on 8!). I can't contain the excitement-after nine years they are finally coming back to Waco! Can't wait for you to see this episode 😍 #vintagemodern #plantladiesforever
Did you hear the news?! Beyoncé's twins are here!! @people 🇺🇸 ❤️
Filming a design meeting with my sister today (!!!!!!!) and clearly Rover is not impressed. #fixerupper #season5iscoming @hgtv (📷: @matsumoto818 )
We are eating at @thesugarfactory with our five little girls in NYC ... I think they are rubbing off on us. #hyper #sisters🍭#sugarfactorynyc
My sis is a crazier #plantlady than I am. I knew the spring #magnoliahome accessory line had to have plant stands for crazies like us... these stands will be available this summer at @magnolia in three different finishes! 🌱🌿
Shorty's Pizza shack, butterfinger blizzards, and shopping for old vinyls... that's a good night out with the sis' #husbandswatching9kidsbackhome #thksguys #❤️ @spinconnection
Had so much fun tonight w/family #inluck with @wholesomewave #willienelson #fixfood
I was laughing this morning when I started getting texts and messages congratulating me on my new baby! No, I didn't have a baby and no, I'm not pregnant 😉but my sister shines and I'm so proud of her! #numberfive #notme #her
Late night decorating fun with my little sister! #👭 #reveal #fixerupper #gotobed
Well I thought my little sister came to visit me this week but I think she actually came for a cupcake. Or two. Or twenty. #shesnotscared #stockpiling #silosbakingco
In High Point, NC setting up our furniture showroom this week! I have a car full of plants, coffee, and good friends to help get this thing to the finish line. #magnoliahome
Showing my sis the silos and after many attempts for a cute pic we finally gave up. #theselfiestruggleisreal
Took a trip and surprised my little sis this weekend- she's about to have her fifth baby. Yes five. We drank coffee, went antique shopping, and ate like we were both pregnant. I am now refreshed and ready for the two big reveals this week! #seasontwo #fixerupper #thanksmikey
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From time to time, Jo also shares photographs with her little sister, who she affectionately calls "Mikey." Now that Mikey also lives in Waco, Texas, the two try to spend as much time with each other as they can. 

Judging from the snapshots, Mikey and Jo are incredibly close, helping each other decorate, never failing to make each other laugh with silly faces and being there for each other during major life moments (like when Mary Kay gave birth to her sixth child). 

And the best part? Jo actually has another sister -- Teresa!

Sister love. #nationalsiblingday ❤️

A post shared by Joanna Stevens Gaines (@joannagaines) on

And if you look at photos of the three of them together, they definitely look related. While Teresa has remained out of the spotlight, she actually the host of an inspirational YouTube show called "Let's Talk With Teresa Ann" and writes lifestyle and faith-based posts for her blog Triumphant Victorious Reminders.

For more on Jo and her sisters, click through the slideshow above.

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Inside Chip and Joanna Gaines' home
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Inside Chip and Joanna Gaines' home
Played in the dirt this weekend and spruced up the front porch with a variety of hydrangea plants. Now time for a Sunday nap 💚 #homebody #andplantladytoo
It's time for bed but I was determined to find a perfect spot for this metal verse. #fourthtimesthecharm
One day I will show you what's inside this extra large hutch... #dishjunky #farmhouse
May your day be Merry and Bright! #merrychristmas
Rearranging living room today made the space feel so much bigger. #monstertreeisgone #rearranginganditfeelssogood #farmhouse
This rainy day is making it really hard for me to leave for work. #homebody
I may have gained ten pounds today... #christmasbaking
Formal sitting room turned office. Chk out the details on my site. #makeyourspacesworkforyou
Day 10: allergies aren't fun and they got the best of me tonight. So I did some sit ups and called it a day. Showing up is the hardest part #healthybody #healthymind #youcandoit
Excited to announce that soon and very soon you will be able to get the farmhouse style online and at our storefront boutique! #openingmay2014
A farmhouse for the dolls, fairies, and other lucky miniatures. #farmhouse
The hardest thing about bunk beds is when you have to actually make the bed. I just got simple striped sheets #potterybarn and a nice throw blanket #target for the edge of the bed. This cuts the time in half and it still has a finished casual look
Boys bathroom after a good cleaning. #howdoesitgetsodirty #farmhousestyle magniolia farms vanity built by @ckharp
Upstairs reading nook #ifonlyiwasareader #farmhouse
Are you crafting this summer? #imnotbutwishiwas #createandinspire
The jasmine vines are finally doing their thing and framing out the front of the greenhouse
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