Hailey Bieber Shows Off Husband Justin Bieber's Custom Hat Featuring a Subtle Nod to Son Jack Blues

Justin Bieber has some new swag in honor of his baby boy.

On Tuesday, Oct. 1, Hailey Bieber showed off her husband's custom hat in honor of their little one in a sweet carousel post on Instagram. The singer, 30, and the Rhode founder, 27, announced the birth of their son Jack Blues Bieber on Aug, 23.

One of the photos in the gallery shows the back of Justin's head as he sports a baseball cap. His hat is embroidered with the name "Jack Blues" in blue, script letters. While the proud dad rocks his new hat, Hailey shows off her new necklace, also inspired by Jack Blues.

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In a zoomed-up photo of the proud mom's neck, she shows off a gold necklace with diamond-encrusted "JBB" bubble letters — the initials of her son.

"It’s October and I’m someone’s Mom. 🎃," Hailey captioned the post.

Last week, a source told PEOPLE that the couple appears "more in love" than ever now that they have Jack Blues in their lives.

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“They had a quiet wedding anniversary celebration," the insider said, referring to Justin and Hailey's recent 6th anniversary of their September 2018 New York City courthouse wedding.

"They seem even more in love since the baby arrived," the source added.

The source also shared that the new mom is "feeling great," and that her husband is "encouraging her to catch up with friends." Hailey has "been out a few times without the baby," the insider said.

Meanwhile, the source also noted that new dad Justin has "been in a happy bubble since baby Jack was born," adding that the Grammy winner "wants to focus on being a great dad and husband."