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.

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!

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.