Justin Bieber and Hailey Baldwin’s posts about his baby sister, Bay, have fans thinking he’s secretly had a daughter. every. single. time.

If Justin Bieber and wife Hailey Baldwin aren’t denying reports they’re expecting their first baby, they’re sparking secret child theories all over again when they post innocent pictures of Bieber’s little sister.

Bieber often posts about his younger siblings, including little half-sister Bay, who shares the same dad as Biebs.

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And every time the little siblings appear on Justin’s Instagram account, his clued-up followers lose it over the sheer cuteness, while the other half frantically head to Twitter to ask if he and Hailey have secretly welcomed a child.

Bieber and baby half sister

If they had, we’d be first to tell you, trust us.

When Bieber posted one of the first pictures of one of his younger siblings way back in 2016, he captioned it: “My daughter…… just kidding.”

And the adorbs photo has Beliebers eager for the day he says he’s not kidding.

He has four half-siblings from his dad’s side, sisters Jazmyn and Bay and brother Jaxon.

Justin also has a step sister called Allie, who his step-mum had in a previous relationship.

The ‘Baby’ singer is incredibly close to them all and may the wholesomeness continue forever more.