On tonight's episode of Teen Mom 2, fans witnessed a breakup, a messy custody battle, and yes, even a birth! Chelsea Houska and her hunky hubby, Cole DeBoer, welcomed son Watson Cole back in January, and after seeing him grow over the past seven months on social media, it was sweet to see him so little again! Yet the newest addition to the family — which made Aubree a big sister once again— had fans wondering: Who are Chelsea's own sisters?

By now, fans are well aware of her mom, Mary, and her dad, Randy — after all, the reality star dad boasts 266,000 followers on Instagram and uses the handle @paparandlicious. Yet despite the fact that the 25-year-old is so open about most aspects of her life, her sisters are rarely discussed on the show, let alone seen.

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As it turns out, Chels has not one, not two, but three older sisters — Melissa and Angie (who are in their 30's), and Emily, 28, — and they all have children of their own! That's right, Chelsea is an aunt! Melissa lives in Germany and has one daughter, Angie has a son and a daughter, and Emily has two daughters.

Yet don't let the fact that the sisters are not often seen make you think that they're not close. In April, the reality star mama took to Twitter to post a funny conversation she had with her sisters that quite literally had us laughing out loud. She wrote, "Just a regular convo with my mom and sisters today…" Haha!

MORE: Fans Cannot Get Over How Big Chelsea Houska's Baby Boy Is in This Adorable Pic From Their Family Vacay!

Unfortunately, according to a blog post by Melissa, we will never meet them. The three sisters prefer to stay out of the television spotlight, and considering Chelsea's life is under a microscope at all times, we certainly don't blame them!

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