Miley Cyrus Proves She's Noah's Biggest Fan!

Noah Cyrus wears an over-sized red sweatshirt while performing some songs at the BLI Summer Jam on Friday night (June 16) in Long Island, N.Y.

The 17-year-old singer’s older sister Miley Cyrus also performed at the concert, held at Jones Beach Theater.

Miley proved that she is Noah‘s biggest fan by wearing a shirt from her merch line!

“@noahcyrus is the worlds coolest baby sister!!!! Rocked her NC-17 merch last night for the @1061bli show!!!! Thanks for having us! Keep playin #Malibu! Love you!” Miley wrote on her Instagram account after the show.