Justin Bieber dotes on wife Hailey Bieber's toddler niece as the couple step out in Studio City

Justin Bieber appeared to have baby fever during an afternoon outing with his wife, Hailey Bieber, along with her sister, Alaia Baldwin and baby, as he lovingly held the toddler in his arms.

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Justin Bieber dotes on wife Hailey Bieber's toddler niece as the couple step out in Studio City

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Justin Bieber dotes on wife Hailey Bieber's toddler niece as the couple step out in Studio City

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Justin Bieber dotes on wife Hailey Bieber's toddler niece as the couple step out in Studio City

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Justin Bieber dotes on wife Hailey Bieber's toddler niece as the couple step out in Studio City

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