Justin Bieber knows how to be a great big brother.The singer took to Instagram on Friday (May 15) to share an adorable photo with his one-year-old half sister Bay Bieber, both rocking beanies and sleek sweatsuits.JB topped off the cuteness with an even sweeter caption: "Dear baby sis, you will grow up to be a confident, strong, kind, compassionate powerful woman!
Excited to watch you grow into the incredible woman you are DESTINED TO BE!"Bay is Justin's dad Jeremy's first child with Chelsey.
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