AceShowbiz - Hailey Bieber (Hailey Baldwin) has surfaced online after welcoming her son Jack Blues Bieber. The new mom was photographed out and about with her best friend Kylie Jenner in Bel-Air.

In some photos obtained by Deuxmoi, the pair could be seen visiting Il Segreto Ristorante in the area. For the outing, the model appeared to try to go incognito by wearing a black mask as she rocked an oversize blazer and a hand bag. She completed her style with white socks and red furry shoes.

As for Kylie, the Khy founder looked casual in a black tank top and matching pants. She had her hair pulled up in a messy bun while toting a shoulder bag. The twosome appeared to be in high spirits as they were joined by another girl friend.

The sighting came after Hailey sparked concern among fans with her unusual social media behavior. Fans noticed that Hailey, who gave birth to her and husband Justin Bieber's son Jack in August, uncharacteristically has yet to post anything on her feed since July 31.

"It's been more than a week since Hailey gave birth and no post from her yet. I wonder if she's actually gonna try and keep her son private and not show his face," a curious fan wrote in a Reddit post.

Someone replied, "She exploited the hell out of her pregnancy lol, I'd be very pleasantly surprised if she's not going to exploit the baby." The person added, "I hope she doesn't, she of all people knows how fame can f**k a little kid up. Her husband is one of the biggest child stars of all time and look at him now…."

One other user, however, pointed out that Hailey might have struggled with postpartum depression. "On the other hand, you never know what occurs to a woman’s body and the changes shortly after giving birth, it’s possible that you could be suffering from some sort of depression or some health issues so that’s also why she's not been posting the baby," the user continued. "I know she's reposting Rhode stuff but that could be her PR team bc I know they have access to her account."