Justin and Hailey Bieber celebrated their inaugural Halloween as parents with their son Jack.

The couple dressed as Ron and Kim Possible from the beloved Disney Channel show, while baby Jack was dressed as Rufus, the naked mole rat.

Justin shared a series of heartwarming photos on Instagram showcasing their family costume.

Hailey sported a striking red wig, black crop top, gloves, and green cargo pants to embody Kim Possible.

Justin complemented Hailey's look in a black sweater, gray trousers, and a black cap as Ron Stoppable.

Jack was snug in a pink hooded romper designed to mimic Rufus, adding to the cuteness of the ensemble.

This Halloween marked a special moment for the couple as they embraced their new roles as parents.

Hailey had shared the first photo of baby Jack on Instagram just days before Halloween, showcasing his adorable features.

Sources close to the couple noted that they are both "overjoyed" with parenthood and cherish every moment with their son