Kourtney Kardashian and Travis Barker introduce their newborn, Rocky Thirteen.

The couple shared adorable pics on Instagram, including baby Rocky's first moments.

Kourtney and Travis rocked all-black outfits, twinning with their baby.

Baby Rocky was born at Cedars-Sinai Medical Center on Nov. 1.

They have a blended family with kids from previous relationships.

Kourtney announced her pregnancy in a creative way at a Blink-182 concert.

Her pregnancy had a scary moment when she underwent fetal surgery.

The couple had always dreamed of expanding their family.

They embarked on an IVF journey, but Kourtney later decided to focus on their wedding and leave the rest to fate.