All About Justin Bieber: Justin Bieber's secret sexy sister revealed: 'Beauty runs in the family'

Justin Bieber GETTY

SUPERSTAR: Justin Bieber is one of the biggest stars in the world

While the pop prince already has a two younger siblings, Jaxon Bieber, 8, and Jazmyn Bieber, 9, fans were unaware of his sexy second sister.

Taking to Instagram on Thursday morning, Justin shared a snap of a woman posing in a sheer black dress.

Featuring boob-teasing see-through panels, the outfit allowed the lady to flaunt her toned frame and larger than life assets.

She completed her look with golden blonde locks and matching thigh-high boots.

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Ché Mcsorley/Instagram

Ché Mcsorley has a sexy twin sister Leonie

Justin Bieber INSTAGRAM

JOKER: Justin Bieber posted this snap of Rachel online

"Y'all need to meet my sister Rachel Bieber"
Justin Bieber

Captioning the post, the What Do You Mean? hit-maker wrote: "Y'all need to meet my sister Rachel Bieber."

However, there was a catch.

Biebs doesn't actually have another sister, the pic is a copy and paste Photoshop job.

The body and hair belongs to none other than Beyoncé from when she attended the NYC's School of Visual Arts in 2013 while the face is that of Bieber himself.

Justin Bieber GETTY