Brian Flannery, PacificCoastNews / Pacific Coast News 1 / 10
Brian Flannery, PacificCoastNews / Pacific Coast News 1 / 10

Daddy dearest!

Bobby Cannavale stepped out for a walk in New York City on Feb. 28 and showed off his new baby, son Rocco, while treating him to a little snuggle.

Bobby's longtime girlfriend, Rose Byrne, was spotted out and about and back into the swing of things a day later in New York City -- and momma was looking good!

The actors welcomed the bundle of joy just a month ago.

In her solo walk, the "Neighbors" actress was dressed relatively simple in a mustard colored coat, which was worn over a pair of black leggings and a navy plaid ensemble.

The outfit was accentuated with a cozy gray scarf, black ankle boots and a tanned leather handbag, draped over one shoulder.

Rose's walk about the Big Apple constituted some well-deserved alone time, as she's been busy tending to her newborn, who was born on Feb. 1.

Her partner of three years, Bobby, announced the birth on the Stephen Colbert show a few days after his son was born.

"You know, I didn't do anything. We (fathers) don't do anything and I'm so tired. I think I've gained 28 pounds since Monday," he joked to the host. "I mean, I'm not kidding you. Like, this jacket fit so well, like, last Thursday. But I've been eating so much."

Bobby, who stars in HBO's "Vinyl," also mentioned that he had received a somewhat unusual gift from Al Pacino, whom he calls his "good friend."

"He gave me a diaper cake for the baby, it was like a big cake made of diapers," Bobby revealed.

A day before Rose strolled around New York, Bobby was seen holding their son and pushing a stroller. Rocco looked to be in a jacket and bootie socks to protect him from the elements.

A day prior to that, the couple was seen together pushing their turquoise stroller around the big city, as well. Both parents were bundled up in to protect themselves from the east coast chill.

Bobby knows a bit about this parenting thing. He has a 20-year-old son from a previous relationship. Like his father, Jake Cannavale is an actor and has starred in "Nurse Jackie" and several Broadway shows.

Of the 20-year age difference between Bobby's kids, Stephen Colbert told him, "nice grouping."