Fifth Harmony's Camila Cabello has the cutest relationship with her younger sister!

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The 18-year-old 5H singer is currently home in Miami, Fla. and is spending plenty of time with her family before she needs to get back to work.

On Tuesday night, Cabello revealed what her and her sister Sofia like to do "on wild nights in Miami."

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They are all about having a sing-a-long to Disney Channel Original Movie High School Musical!

The sister duo gave an energetic performance of "Start of Something New," which is the song Troy (Zac Efron) and Gabriella (Vanessa Hudgens) sing at the ski resort. Check it out below!

 if you're wondering what happens on wild nights in miami....... it's this. WE'RE SOOAAAARRINNN

A video posted by camila_cabello (@camila_cabello) on May 5, 2015 at 7:03pm PDT

Sofia is the spitting image of her older sister. She has similar mannerisms of the 5H singer while they have their adorable sing-a-long.

The two aren't constantly together like they once were due to the 5H singer's girl group commitments, but it is nice to see they still have a super close sibling bond.

Cabello constantly shares photos of her little sister on social media, including the one above from her 18th birthday celebration on tour. Plus, back in November 2013, the older Cabello sibling revealed her sister's obsession with Sharpay (Ashley Tisdale) from the High School Musical trilogy.

omg just found out sharpay from high school musical is actually my little sister A photo posted by camila_cabello (@camila_cabello) on Nov 29, 2013 at 3:13pm PST

Cabello gets an A+ for being an awesome big sister!