The teenagers, Sophia, 19, Sistine, 17, and Scarlet, 13 – his daughters with wife Jennifer Flavin – made a splash on the red carpet at the Globes and Oscars, and have become regulars in their dad's increasingly frequent Instagram posts.
Just this past weekend, the Rocky star, 69, shared pictures and videos with Sophia during a "nice, peaceful, quiet family outing at Coachella." (He jokingly dubbed her his "bodyguard.")
Given the sisters' grace and famous pedigree, fans have already begun wondering if a Stallone family reality show might be a possibility. But before they truly begin to take over Hollywood, here's a few things to know about the Sly family brood.
Sophia is currently a student at USC, and judging by her dorm decorations, looks to be in the Delta Gamma sorority.
The oldest Stallone daughter, Sophia has rarely spoken to the press since undergoing heart surgery in 2012 – the same year her half-brother, Sage, tragically died from heart complications.
She previously underwent a successful heart surgery at just 2 months old, when doctors corrected a congenital malformation of a valve.
Before the successful operation in 2002, Sophia told Paris Match, "Every day I think of my heart. I eat really healthy, and as I get more tired than normal, I have to be very careful when doing sports."
In the magazine, Flavin explained that her daughter's room reflect her personality. "Sophia's is all blue, full of books and movies. She is the one that most resembles her father. Like him she has read nearly all of Shakespeare's books. They have a very special bond, they think alike and even have the same gestures, Sophia is the love of his life."
Stallone's middle child is already following in the footsteps of her mom, a former model. After signing with IMG models and getting photographed by legendary photographers Inez van Lamsweerde and Vinoodh Matadin, Vogue called the aspiring model a "fresh face to watch."
In a March interview with the fashion magazine, the 17-year-old admitted that her father's fame has helped her amass a solid 127,000 Instagram followers, but she made it clear she hopes to forge her own path.
"I have followers because of my dad. I get asked about his movies once a week. They want to know how he stays in shape and if he writes the screenplays," she said.
Despite growing up in Hollywood, however, Sistine says she has no intention of going into her dad's business. "I'm a horrible actor! I hate seeing myself talk on camera – I look ridiculous!" she explained.
Still, she adds, "Modeling is basically acting, changing personalities. You don't want to be yourself."
At just 13, Scarlet hasn't been nearly as visible as her older sisters, but from her proud dad's Instagram, we know she inherited some of his athletic ability.
"Scarlet Winning in her division. The FLASH," Stallone tweeted last week, along with a video of Scarlet winning a track race.
And while the baby of the family hasn't had as much time in the spotlight as the other girls, she still finds a way to make her presence known on the family's shared posts.