November 10,|11: 59 am

The cause of death for 13 – year-old Broadway actress Laurel Griggs was revealed Sunday – as tributes flooded social media for the up-and-coming star.

Griggs – who debuted on Broadway at age 6 and had appearances on “Saturday Night Live” –died on Nov. 5 in New York Cityafter suffering a massive asthma attack, her family told The Post.

The teen thespian was rushed to Mount Sinai Hospital, where doctors tried to save her to no avail, according to her grandfather.

“The world lost a real princess who only wanted to make the future happy for all,” grandfather David Rivlin said in a Facebook message. “Acting was a just a childhood dream come true and she had big plans for the future.”

Griggs made her Broadway debut alongside the actress Scarlett Johansson in “Cat on a Hot Tin Roof,”according to her IMDB page. She then joined the production of “Once,” where she had the longest run in the role of Ivanka.

While working in the industry, Griggs attended the Clinton School in the Chelsea neighborhood, which closed for a half-day on Friday, the day of her funeral service at Park West-Riverside Chapels, according to her family.

Fellow cast members took to social media in the wake of her death to remember the “sweet” young actress.

“My @oncemusical family tragically lost one of our youngest members this past week,” wrote actor Lucas Papaeliasin an Instagram post on Sunday. “We are heartbroken & devastated… We will never forget this sweet, talented, young soul.”

Her family said a remembrance service will be held Sunday afternoon in Chelsea to celebrate her life.